Contraceptives postcoital synthetic. Medical search

Contraceptive substances to be used after COITUS. These agents include high doses of estrogenic drugs; progesterone-receptor blockers; ANTIMETABOLITES; ALKALOIDS, and PROSTAGLANDINS.

Postcoital contraceptives which owe their effectiveness to hormonal preparations.

Compounds, usually hormonal, taken orally in order to block ovulation and prevent the occurrence of pregnancy. The hormones are generally estrogen or progesterone or both.

The sexual union of a male and a female, a term used for human only.

Fixed drug combinations administered orally for contraceptive purposes.

Abnormal uterine bleeding that is not related to MENSTRUATION, usually in females without regular MENSTRUAL CYCLE. The irregular and unpredictable bleeding usually comes from a dysfunctional ENDOMETRIUM.

Chemical substances that prevent or reduce the probability of CONCEPTION.

Chemical compounds that induce menstruation either through direct action on the reproductive organs or through indirect action by relieving another condition of which amenorrhea is a secondary result. (From Dorland, 27th ed)

Oral contraceptives which owe their effectiveness to hormonal preparations.

Postcoital contraceptives which owe their effectiveness to synthetic preparations.

Chemical substances or agents with contraceptive activity in females. Use for female contraceptive agents in general or for which there is no specific heading.

Bleeding from blood vessels in the UTERUS, sometimes manifested as vaginal bleeding.

A semisynthetic alkylated ESTRADIOL with a 17-alpha-ethinyl substitution. It has high estrogenic potency when administered orally, and is often used as the estrogenic component in ORAL CONTRACEPTIVES.

Oral contraceptives which owe their effectiveness to synthetic preparations.

Devices that diminish the likelihood of or prevent conception. (From Dorland, 28th ed)

Prevention of CONCEPTION by blocking fertility temporarily, or permanently (STERILIZATION, REPRODUCTIVE). Common means of reversible contraception include NATURAL FAMILY PLANNING METHODS; CONTRACEPTIVE AGENTS; or CONTRACEPTIVE DEVICES.

Contraceptive devices used by females.

Means of postcoital intervention to avoid pregnancy, such as the administration of POSTCOITAL CONTRACEPTIVES to prevent FERTILIZATION of an egg or implantation of a fertilized egg (OVUM IMPLANTATION).

Behavior patterns of those practicing CONTRACEPTION.

Chemical substances or agents with contraceptive activity in males. Use for male contraceptive agents in general or for which there is no specific heading.

Contraceptive devices placed high in the uterine fundus.

Health care programs or services designed to assist individuals in the planning of family size. Various methods of CONTRACEPTION can be used to control the number and timing of childbirths.

A synthetic progestational hormone used often as the progestogenic component of combined oral contraceptive agents.

A synthetic progestational agent with actions similar to those of PROGESTERONE. This racemic or (+-)-form has about half the potency of the levo form (LEVONORGESTREL). Norgestrel is used as a contraceptive, ovulation inhibitor, and for the control of menstrual disorders and endometriosis.

A synthetic progestational hormone with actions similar to those of PROGESTERONE and about twice as potent as its racemic or (+-)-isomer (NORGESTREL). It is used for contraception, control of menstrual disorders, and treatment of endometriosis.

The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.

The 3-methyl ether of ETHINYL ESTRADIOL. It must be demethylated to be biologically active. It is used as the estrogen component of many combination ORAL CONTRACEPTIVES.

A synthetic progestational hormone with actions similar to those of PROGESTERONE but functioning as a more potent inhibitor of ovulation. It has weak estrogenic and androgenic properties. The hormone has been used in treating amenorrhea, functional uterine bleeding, endometriosis, and for contraception.

Vaccines or candidate vaccines used to prevent conception.

Unintended accidental pregnancy, including pregnancy resulting from failed contraceptive measures.

Procedures to block or remove all or part of the genital tract for the purpose of rendering individuals sterile, incapable of reproduction. Surgical sterilization procedures are the most commonly used. There are also sterilization procedures involving chemical or physical means.

Pregnancy, usually accidental, that is not desired by the parent or parents.

A synthetic progestin that is derived from 17-hydroxyprogesterone. It is a long-acting contraceptive that is effective both orally or by intramuscular injection and has also been used to treat breast and endometrial neoplasms.

Chemical substances that are destructive to spermatozoa used as topically administered vaginal contraceptives.

A synthetic progestational hormone with actions and uses similar to those of PROGESTERONE. It has been used in the treatment of functional uterine bleeding and endometriosis. As a contraceptive, it has usually been administered in combination with MESTRANOL.

The periodic shedding of the ENDOMETRIUM and associated menstrual bleeding in the MENSTRUAL CYCLE of humans and primates. Menstruation is due to the decline in circulating PROGESTERONE, and occurs at the late LUTEAL PHASE when LUTEOLYSIS of the CORPUS LUTEUM takes place.

Intrauterine contraceptive devices that depend on the release of metallic copper.

A synthetic progestational hormone used alone or in combination with estrogens as an oral contraceptive.

Contraceptive methods based on immunological processes and techniques, such as the use of CONTRACEPTIVE VACCINES.

Intentional removal of a fetus from the uterus by any of a number of techniques. (POPLINE, 1978)

Pregnenes with one double bond or more than three double bonds which have undergone ring contractions or are lacking carbon-18 or carbon-19..

Compounds that interact with PROGESTERONE RECEPTORS in target tissues to bring about the effects similar to those of PROGESTERONE. Primary actions of progestins, including natural and synthetic steroids, are on the UTERUS and the MAMMARY GLAND in preparation for and in maintenance of PREGNANCY.

ETHINYL ESTRADIOL and NORGESTREL given in fixed proportions. It has proved to be an effective contraceptive (CONTRACEPTIVES, ORAL, COMBINED).

A field of biological research combining engineering in the formulation, design, and building (synthesis) of novel biological structures, functions, and systems.

Drugs administered orally and sequentially for contraceptive purposes.

Procedures that render the female sterile by interrupting the flow in the FALLOPIAN TUBE. These procedures generally are surgical, and may also use chemicals or physical means.

Biologically functional sequences of DNA chemically synthesized in vitro.

Steroidal compounds related to PROGESTERONE, the major mammalian progestational hormone. Progesterone congeners include important progesterone precursors in the biosynthetic pathways, metabolites, derivatives, and synthetic steroids with progestational activities.

Unsaturated derivatives of the steroid androstane containing at least one double bond at any site in any of the rings.

The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS; the PITUITARY GLAND; the ovaries; and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase.

The number of offspring a female has borne. It is contrasted with GRAVIDITY, which refers to the number of pregnancies, regardless of outcome.

Intrauterine devices that release contraceptive agents.

Knowledge, attitudes, and associated behaviors which pertain to health-related topics such as PATHOLOGIC PROCESSES or diseases, their prevention, and treatment. This term refers to non-health workers and health workers (HEALTH PERSONNEL).

Contraceptive devices used by males.

17-Hydroxy-6-methylpregna-3,6-diene-3,20-dione. A progestational hormone used most commonly as the acetate ester. As the acetate, it is more potent than progesterone both as a progestagen and as an ovulation inhibitor. It has also been used in the palliative treatment of breast cancer.

Pregnancy in human adolescent females under the age of 19.

Variations of menstruation which may be indicative of disease.

Small containers or pellets of a solid drug implanted in the body to achieve sustained release of the drug.

Education which increases the knowledge of the functional, structural, and behavioral aspects of human reproduction.

(6 alpha)-17-Hydroxy-6-methylpregn-4-ene-3,20-dione. A synthetic progestational hormone used in veterinary practice as an estrus regulator.

Steroidal compounds related to ESTRADIOL, the major mammalian female sex hormone. Estradiol congeners include important estradiol precursors in the biosynthetic pathways, metabolites, derivatives, and synthetic steroids with estrogenic activities.

Chemical substances which inhibit the process of spermatozoa formation at either the first stage, in which spermatogonia develop into spermatocytes and then into spermatids, or the second stage, in which spermatids transform into spermatozoa.

Blocking the process leading to OVULATION. Various factors are known to inhibit ovulation, such as neuroendocrine, psychological, and pharmacological agents.

Pregnadienes which have undergone ring contractions or are lacking carbon-18 or carbon-19.

The capacity to conceive or to induce conception. It may refer to either the male or female.

A sheath that is worn over the penis during sexual behavior in order to prevent pregnancy or spread of sexually transmitted disease.

Sexual activities of humans.

A medicated adhesive patch placed on the skin to deliver a specific dose of medication into the bloodstream.

17 alpha-Hydroxypregn-4-en-20-yn-3-one. A synthetic steroid hormone with progestational effects.

Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.

Compounds that interact with ESTROGEN RECEPTORS in target tissues to bring about the effects similar to those of ESTRADIOL. Estrogens stimulate the female reproductive organs, and the development of secondary female SEX CHARACTERISTICS. Estrogenic chemicals include natural, synthetic, steroidal, or non-steroidal compounds.

The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.

An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.

Elements of limited time intervals, contributing to particular results or situations.

Nonionic surfactant mixtures varying in the number of repeating ethoxy (oxy-1,2-ethanediyl) groups. They are used as detergents, emulsifiers, wetting agents, defoaming agents, etc. Nonoxynol-9, the compound with 9 repeating ethoxy groups, is a spermatocide, formulated primarily as a component of vaginal foams and creams.

Individuals requesting induced abortions.

Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.

Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.

Termination of pregnancy under conditions allowed under local laws. (POPLINE Thesaurus, 1991)

Health care services related to human REPRODUCTION and diseases of the reproductive system. Services are provided to both sexes and usually by physicians in the medical or the surgical specialties such as REPRODUCTIVE MEDICINE; ANDROLOGY; GYNECOLOGY; OBSTETRICS; and PERINATOLOGY.

Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.

The social institution involving legal and/or religious sanction whereby individuals are joined together.

Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.

The concept covering the physical and mental conditions of women.

An important aggregate factor in epidemiological studies of women's health. The concept usually includes the number and timing of pregnancies and their outcomes, the incidence of breast feeding, and may include age of menarche and menopause, regularity of menstruation, fertility, gynecological or obstetric problems, or contraceptive usage.

Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor.

Diseases due to or propagated by sexual contact.

A contraceptive method whereby coitus is purposely interrupted in order to prevent EJACULATION of SEMEN into the VAGINA.

Absence of menstruation.

An orally active synthetic progestational hormone used often in combinations as an oral contraceptive.

The number of births in a given population per year or other unit of time.

Human males as cultural, psychological, sociological, political, and economic entities.

In females, the period that is shortly after giving birth (PARTURITION).

Antimutagenic effects of centchroman--a contraceptive and a candidate drug for breast cancer in multiple mutational assays. (1/25)

Centchroman (CC), a non-steroidal oral contraceptive and a candidate drug for breast cancer, has been reported to exhibit partial to complete remission of lesions in 40.5% of breast cancer patients. The potent anti-oestrogenic activity, negligible side-effects and anti-breast cancer activity of CC prompted us to evaluate the antimutagenic effects of this compound in a bacterial mutagenicity assay and CHO/HPRT and AS52/GPT mutation assays in vitro and in vivo in female Swiss albino mice as measured by both sister chromatid exchange (SCE) and chromosome aberrations (CA) against three known positive mutagen compounds, dimethylbenz[a]anthracene (DMBA), cyclophosphamide (CP) and mitomycin C (MMC). Antimutagenicity assays in Salmonella strains TA97a, TA100, TA98 and TA102 were carried out against commonly used known positive mutagens, sodium azide, 4-nitro-o-phenylenediamine, cumine hydroperoxide, 2-aminofluorene and danthron. A significantly reduced number of bacterial histidine revertant colonies was observed in the plates treated with 0.1, 1, 5 and 10 microg/plate CC and a positive compound when compared with bacterial plates treated with the respective positive compound alone. Ethyl methanesulfonate (EMS), a commonly used positive mutagen for CHO/HPRT and AS52/GPT gene mutation assays, was used for antimutagenicity assay in these cells. CC exhibited protective effects against the mutagenicity of EMS in these two mammalian cell mutation assays, CHO/HPRT and AS52/GPT. In the in vivo studies, pretreatment with CC reduced DMBA-induced SCE and CA and CP- and MMC-induced CA when compared with the group treated only with the positive compounds. These results indicate that CC can reduce the mutagenic effects of known genotoxic compounds. (+info)

CDB-2914: anti-progestational/anti-glucocorticoid profile and post-coital anti-fertility activity in rats and rabbits. (2/25)

Our goal was to determine the endocrine and post-coital anti-fertility activity of CDB-2914. Concurrent administration of progesterone to rats on day 4 post-mating blocked the anti-fertility activity of a single oral 2 mg dose of CDB-2914. CDB-2914 did not exhibit progestational activity in the oestradiol-primed immature female rabbit at doses that exhibited anti-progestational activity. CDB-2914 antagonized exogenous and endogenous progesterone-stimulated uterine haptoglobin synthesis and secretion in immature and adult mated rabbits respectively. Neither CDB-2914 nor mifepristone exhibited glucocorticoid activity as determined by thymus involution in rats; mifepristone was twice as potent as CDB-2914 in antagonizing glucocorticoid action. Post-coital CDB-2914 treatment resulted in a dose-dependent reduction in implantation sites and pregnancy rates in rabbits. CDB-2914-induced inhibition of uterine weight increase, endometrial glandular arborization and uterine haptoglobin synthesis/secretion correlated with inhibition of pregnancy in mated rabbits. A single oral dose of 64 mg CDB-2914/rabbit was effective at blocking pregnancy when administered on day 4, 5, or 6 post-mating, whereas 32 mg/rabbit was only partially effective in this regard. These data demonstrate that CDB-2914 is a potent, orally active anti-progestin with weak anti-glucocorticoid activity. CDB-2914 inhibited implantation in adult rats and rabbits demonstrating its potential as a post-coital contraceptive drug. (+info)

A single mid-follicular dose of CDB-2914, a new antiprogestin, inhibits folliculogenesis and endometrial differentiation in normally cycling women. (3/25)

Previous studies in women have shown that the antiprogestin mifepristone delays or inhibits folliculogenesis. The purpose of this study was to explore whether a new analogue, CDB-2914, has similar effects on folliculogenesis, ovulation, or on subsequent luteal phase endometrial maturation. Forty-four normally cycling, healthy women recorded urine LH and vaginal bleeding during pre-treatment, treatment, and post-treatment cycles. At a lead follicle diameter of 14-16 mm, a single oral dose (10, 50, 100 mg) of CDB-2914 or placebo was given, and daily ultrasound, oestradiol and progesterone were obtained until follicular collapse; an endometrial biopsy was obtained 5-7 days later. Single doses of CDB-2914 were well tolerated. Mid-follicular CDB-2914 suppressed lead follicle growth, causing a dose-dependent delay in folliculogenesis and suppression of plasma oestradiol. At higher doses, a new lead follicle was often recruited. Although luteinized unruptured follicles were observed at the 100 mg dose, all women had follicular collapse. There was a significant delay in endometrial maturation after CDB-2914 at all doses. The treatment cycle was lengthened by 1-2 weeks in 30% at 100, 27% at 50 and 9% at 10 mg. CDB-2914 altered ovarian and endometrial physiology without major effects on menstrual cyclicity and may have therapeutic utility. (+info)

Circulating concentrations of the antiprogestins CDB-2914 and mifepristone in the female rhesus monkey following various routes of administration. (4/25)

The overall aim of these studies was to investigate the oral and i.m. bioavailability of CDB-2914 in intact female rhesus monkeys, and to compare the serum concentrations of CDB-2914 with that of mifepristone following oral administration. In the first study, a 50 mg bolus of CDB-2914 per monkey was administered intravenously, orally or intramuscularly. The area under the serum concentration-time curve for 72 h (AUC(0-72)) following i.v. injection was 18 320 +/- 2718 ng/ml*h, and that for oral administration was 10 464 +/- 3248 ng/ml*h. Thus, the oral bioavailability of CDB-2914 equivalents was 56%. The AUC(0-168 h) following i.m. injection was 11 226 +/- 1130 ng/ml*h. Therefore, the i.m. bioavailability of CDB-2914 equivalents was 62%. In the second study, the serum concentrations of CDB-2914 and mifepristone equivalents were compared following an oral bolus dose in two different formulations. When administered at 5 mg/kg in aqueous suspending vehicle (ASV), the mean peak serum concentration (C(max)) of CDB-2914 equivalents (192 +/- 64 ng/ml) occurred at 5 +/- 1 h, whereas the C(max) of mifepristone equivalents (82 +/- 25 ng/ml) occurred at 3 +/- 1 h. Following administration in gelatin capsules (35 mg/monkey), the C(max) of CDB-2914 equivalents (129 +/- 24 ng/ml) occurred at 5 +/- 1 h, while the C(max) of mifepristone equivalents (31 +/- 8 ng/ml) occurred at 3 +/- 1 h. The serum concentration (AUC(0-120 h)) of CDB-2914 equivalents was 4.7- or 5. 3-fold greater than that of mifepristone equivalents when administered orally in ASV or gelatin capsules respectively. The serum protein binding characteristics of CDB-2914 were also studied. CDB-2914 bound to human alpha(1)-acid glycoprotein (AAG), but not with as high an affinity as mifepristone. In contrast, neither CDB-2914 nor mifepristone bound with high affinity to AAG, corticosteroid binding globulin or sex hormone binding globulin in monkey serum. Collectively, these results indicated that CDB-2914 was more efficiently absorbed than mifepristone following oral administration to female rhesus monkeys. (+info)

Emergency postcoital contraception. (5/25)

Emergency postcoital contraception, a method used to prevent pregnancy after unprotected sexual intercourse, is a highly effective but underutilized birth control option. Two hormone regimens, ethinyl estradiol (100 microg) with levonorgestrel (0.5 mg) or high-dose levonorgestrel (0.75 mg), given within 72 hours of intercourse and repeated 12 hours later, are available for this purpose. These regimens are packaged as Food and Drug Administration labeled, dedicated products or can be adapted for use from standard oral contraceptive pills. Emergency postcoital contraception should be considered as a primary prevention health service to women of childbearing age. (+info)

Pharmacokinetic study of different dosing regimens of levonorgestrel for emergency contraception in healthy women. (6/25)

BACKGROUND: Levonorgestrel (LNG) is a commonly used progestin for emergency contraception; however, little is known about its pharmacokinetics and optimal dose for use. METHODS: Serum levels of LNG and sex hormone-binding globulin (SHBG) were measured in five women who received three different regimens: A: 0.75 mg LNG twice with a 12 h interval; B: 0.75 mg twice with a 24 h interval; and C: 1.50 mg in a single dose, with a washout period of 28 days between each treatment. Blood samples were taken before pill intake and at 1, 2, 4, 8 and 12 h after each dose, every 12 h up to day 4 and every 24 h until day 10. LNG and SHBG were measured in all samples. RESULTS: Maximum LNG concentrations were of approximately 27 nmol/l for treatments A and B, and close to 40 nmol/l for treatment C. The area under the curve was significantly higher for treatment C during the first 12 h, and significantly lower for treatment B during the first 24 h. After 48 h and up to 9 days from onset of treatment, serum LNG levels were similar in all three regimens. SHBG levels remained stable for 24 h, decreasing to 60% of the initial value from day 5 until day 10, with no difference between regimens. CONCLUSIONS: The similarity of LNG serum levels obtained with one single dose of 1.5 mg or two doses of 0.75 mg with a 12 h interval justify a clinical comparison of these two regimes. (+info)

Post-coital administration of levonorgestrel does not interfere with post-fertilization events in the new-world monkey Cebus apella. (7/25)

BACKGROUND: Experimental evidence to disprove the belief that emergency contraception with levonorgestrel (LNG) prevents pregnancy by interfering with post-fertilization events is lacking. Here we determined the effect of post-coital and pre-ovulatory administration of LNG on fertility and ovulation, respectively, in the Cebus monkey. METHODS: To determine the effect on fertility, LNG 0.75 mg or vehicle were administered orally or s.c. once or twice within the first 24 h after mating occurring very close to the time of ovulation. Females that became pregnant were aborted with mifepristone and re-entered the study after a resting cycle until each of 12 females had contributed, in a randomized order, two LNG and two vehicle-treated cycles. To determine the effect on ovulation, LNG 0.75 mg or vehicle were injected twice coinciding with follicles smaller or larger than 5 mm in diameter. Six females contributed five treated cycles each. RESULTS: The pregnancy rate was identical in vehicle- and LNG-treated cycles. LNG inhibited or delayed ovulation only when treatment coincided with a follicle <5 mm diameter. CONCLUSION: In Cebus monkeys, LNG can inhibit or delay ovulation but, once fertilization has taken place, it cannot prevent the establishment of pregnancy. These findings do not support the hypothesis that emergency contraception with LNG prevents pregnancy by interfering with post-fertilization events. (+info)

Mechanisms of action of mifepristone and levonorgestrel when used for emergency contraception. (8/25)

An emergency contraceptive method is used after coitus but before pregnancy occurs. The use of emergency contraception is largely under-utilized worldwide. One of the main barriers to widespread use is concern about the mechanism of action. Recently, treatment with either 10 mg mifepristone or 1.5 mg of levonorgestrel has emerged as the most effective hormonal method for emergency contraception with very low side-effects. However, the knowledge of the mechanism of action of mifepristone and levonorgestrel in humans, when used for contraceptive purposes and especially for emergency contraception, remains incomplete. The objective of this review is to summarize available data on the effects of mifepristone and levonorgestrel on female reproductive functions relevant to the emergency use of the compounds. When summarized, available data from studies in humans indicate that the contraceptive effects of both levonorgestrel and mifepristone, when used in single low doses for emergency contraception, involve either blockade or delay of ovulation, due to either prevention or delay of the LH surge, rather than to inhibition of implantation. (+info)

... nonsteroidal estrogen that was developed as a postcoital contraceptive in the 1960s but was never marketed. Synthesized by ... Fenestrel (INN, USAN) (developmental code name ORF-3858) is a synthetic, ... 1407-. ISBN 978-1-351-78989-9. Revaz C, Goldenberg B, Achtari H (1971). "[Critical study of new contraceptive methods]". ... Ortho Pharmaceutical in 1961 and studied extensively, it was coined the "morning-after-pill" or "postcoital antifertility agent ...

https://en.wikipedia.org/wiki/Fenestrel

The C17α acetate ester of nisterime, nisterime acetate (ORF-9326), also exists and was developed as a postcoital contraceptive ... is a synthetic anabolic-androgenic steroid (AAS) and a derivative of dihydrotestosterone (DHT) that was never marketed. ...

https://en.wikipedia.org/wiki/Nisterime

... a postcoital contraceptive that is marketed and used in China. Relative to anordrin, anordiol has similar but more potent ... Anordiol, or anordriol, also known as 2α,17α-diethynyl-A-nor-5α-androstane-2β,17β-diol, is a synthetic steroid-like mixed ...

https://en.wikipedia.org/wiki/Anordiol

... contraceptives, postcoital, hormonal MeSH D27.505.696.875.360.276.310.360 - contraceptives, postcoital, synthetic MeSH D27.505. ... contraceptives, postcoital, hormonal MeSH D27.505.954.705.360.276.310.360 - contraceptives, postcoital, synthetic MeSH D27.505. ... contraceptives, oral, synthetic MeSH D27.505.696.875.360.276.310 - contraceptives, postcoital MeSH D27.505.696.875.360.276. ... contraceptives, oral, synthetic MeSH D27.505.954.705.360.276.310 - contraceptives, postcoital MeSH D27.505.954.705.360.276. ...

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(D27)

... that was developed as a postcoital contraceptive but was never marketed. It is an androgen ester - specifically, the C17α ... is a synthetic, orally active anabolic-androgenic steroid (AAS) and a derivative of dihydrotestosterone (DHT) ...

https://en.wikipedia.org/wiki/Nisterime_acetate

... was used as an oral, once-a-month, or postcoital hormonal contraceptive. Quingestanol acetate is a ... Quingestanol acetate is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the ... "Further experience with quingestanol acetate as a postcoital oral contraceptive". Contraception. 9 (3): 221-5. doi:10.1016/0010 ... Lara Marks (2010). Sexual Chemistry: A History of the Contraceptive Pill. Yale University Press. pp. 73-. ISBN 978-0-300-16791- ...

https://en.wikipedia.org/wiki/Quingestanol_acetate

To discourage off-label use of DES as a postcoital contraceptive, the FDA in 1975 removed DES 25 mg tablets from the market and ... It is a synthetic and nonsteroidal estrogen of the stilbestrol group, and differs from the natural estrogen estradiol in ... In 1973, in an attempt to restrict off-label use of DES as a postcoital contraceptive (which had become prevalent at many ... regimen of certain regular combined oral contraceptive pills superseded off-label use of DES as a postcoital contraceptive. In ...

https://en.wikipedia.org/wiki/Diethylstilbestrol

As an emergency postcoital contraceptive. *As a means of chemical castration for hypersexuality and paraphilias in men and sex ... Synthetic. Steroidal. ?. 2 mg. ?. ?. ?. ? Diethylstilbestrol. Synthetic. Nonsteroidal. 2.5 mg. 20-30 mg. 11 mg. 0.5-2.0 mg. ,5 ... In 1973, in an attempt to restrict off-label use of DES as a postcoital contraceptive (which had become prevalent at many ... regimen of certain regular combined oral contraceptive pills superseded off-label use of DES as a postcoital contraceptive.[111 ...

https://en.m.wikipedia.org/wiki/Diethylstilbestrol

In May 1973, in an attempt to restrict off-label use of DES as a postcoital contraceptive to emergency situations such as rape ... p. 7. Ulipristal acetate is an orally-active synthetic selective progesterone receptor modulator which acts via high-affinity ... In February 1975, the FDA said it had not yet approved DES as a postcoital contraceptive, but would after March 8, 1975 permit ... To discourage off-label use of DES as a postcoital contraceptive, in February 1975 the FDA ordered DES 25 mg (and higher) ...

https://en.wikipedia.org/wiki/Emergency_contraception

... is a steroidal progestin which was investigated as a progestin-only contraceptive and postcoital contraceptive but was never ... Practical Approach to the Quantitative Determination of Synthetic Progestins". The Journal of Clinical Endocrinology & ...

https://en.wikipedia.org/wiki/Clogestone_acetate

The medication has also been investigated as an emergency post-coital contraceptive. The medication is contraindicated in ... is a synthetic estrane steroid and a derivative of testosterone. It is more specifically a derivative of norethisterone (17α- ...

https://en.wikipedia.org/wiki/Gestrinone

"A Multicenter Clinical Investigation Employing Ethinyl Estradiol Combined with dl-Norgestrel as Postcoital Contraceptive Agent ... or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like ... It has also been used as an emergency contraceptive in the Yuzpe regimen. Norgestrel is a progestogen, or an agonist of the ... 390-. ISBN 978-3-540-38916-3. Lara Marks (2010). Sexual Chemistry: A History of the Contraceptive Pill. Yale University Press. ...

https://en.wikipedia.org/wiki/Norgestrel

F. Lakha, P.C. Ho and Z.M. Van der Spuy et al., A novel estrogen-free oral contraceptive pill for women: multicentre, double- ... a b Adrenocorticotropic Hormone; Adrenocortical Steroids and Their Synthetic Analogs; Inhibitors of the Synthesis and Actions ... Emergency Postcoital Contraception. „American Family Physician", 2000-11-15. American Academy of Family Physicians. [dostęp ...

https://pl.wikipedia.org/wiki/Mifepriston

At least three types of synthetic toxins have been found in the semen of student volunteers: polychlorinated biphenyls (PCBs), ... Depo-Provera, Adjudin, and gossypol are examples of substances used as male contraceptives or in chemical castration. Recent ... Presence of antisperm antibodies may be responsible for sperm agglutination, reduced sperm motility, abnormal postcoital test. ...

https://en.wikipedia.org/wiki/Semen_quality

"Comparative cross-over pharmacokinetic study on two types of postcoital contraceptive tablets containing levonorgestrel". ... or synthetic progestogen, of the 19-nortestosterone group, and a synthetic estrane steroid. It is the C17β acetate ester of ... NETA is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of ... This was a combination formulation of 2.5 mg NETA and 50 μg ethinylestradiol and was indicated as an oral contraceptive. Other ...

https://en.wikipedia.org/wiki/Norethisterone_acetate

Rubio B, Berman E, Larranaga A, Guiloff E (1970). "A new postcoital oral contraceptive". Contraception. 1 (5): 303-314. doi: ... is a synthetic estrane steroid and a derivative of testosterone. It is the C13β or levorotatory stereoisomer and enantiopure ... These formulations are used as emergency contraceptives, normal contraceptives, or in menopausal hormone therapy for the ... Levonorgestrel is currently the most androgenic progestin that remains used in contraceptives, and contraceptives containing ...

https://en.wikipedia.org/wiki/Levonorgestrel

Although almost all combined oral contraceptives contain the synthetic estrogen ethinylestradiol, natural estradiol itself is ... "Comparative cross-over pharmacokinetic study on two types of postcoital contraceptive tablets containing levonorgestrel". ... including in estradiol-containing oral contraceptives and combined injectable contraceptives. It is formulated in combination ... Synthetic derivatives of estradiol used in scientific research include 8β-VE2 and 16α-LE2. Estradiol was first discovered and ...

https://en.wikipedia.org/wiki/Estradiol_(medication)

In this case synthetic FSH by injection or Clomid (Clomiphene citrate) via a pill can be given to stimulate follicles to mature ... a woman under 35 has not conceived after 12 months of contraceptive-free intercourse. Twelve months is the lower reference ... a woman over 35 has not conceived after 6 months of contraceptive-free sexual intercourse. ... during which they have not used any contraceptives.[13] The World Health Organisation also adds that 'women whose pregnancy ...

https://en.wikipedia.org/wiki/Infertility

Contraceptive Agents, Female. Contraceptive Agents. Contraceptives, Postcoital, Synthetic. Contraceptives, Postcoital. Hormone ... women and men of reproductive potential may not participate unless they have agreed to use an effective local contraceptive ... Contraceptives, Oral, Synthetic. Contraceptives, Oral. ...

https://clinicaltrials.gov/ct2/show/NCT03015701

Contraceptive Agents, Female. Contraceptive Agents. Contraceptives, Postcoital, Synthetic. Contraceptives, Postcoital. Hormone ... Contraceptives, Oral, Synthetic. Contraceptives, Oral. ...

https://clinicaltrials.gov/ct2/show/NCT02179749?term=Mifepristone+Treatment+of+alcohol+Use+Disorder&

https://www.clinicaltrials.gov/ct2/show/NCT00637494

Contraceptive Agents, Female. Contraceptive Agents. Contraceptives, Oral, Synthetic. Contraceptives, Postcoital, Synthetic. ... The objective of this study was to investigate the impact of the oral contraceptive YASMIN (containing: drospirenone 3 mg/ ... Single Center, Double Blind, Randomized, Crossover Study to Investigate the Impact of the Oral Contraceptive Yasmin (30 µg EE ... Standard contraindications for use of combined oral contraceptives (class label). Including:. *Presence or history of ...

https://www.clinicaltrials.gov/ct2/show/NCT00651846?term=DROSPIRENONE+AND+ETHINYL+ESTRADIOL&rank=73

Contraceptives, Oral, Synthetic. * Contraceptives, Postcoital, Synthetic. * Hormone Antagonists. * Abortifacient Agents, ... Mifepristone is a synthetic steroid with antiprogestational effects indicated for the medical termination of intrauterine ...

http://pharmacycode.com/Mifepristonum_%5BLatin%5D.html

Contraceptives, Postcoital, Synthetic (3) • Postcoital contraceptives which owe their effectiveness to synthetic preparations. ... Contraceptives, Oral, Synthetic (28) • Oral contraceptives which owe their effectiveness to synthetic preparations. MeSH ... Contraceptives, Postcoital, Hormonal (1) • Postcoital contraceptives which owe their effectiveness to hormonal preparations. ... Contraceptives, Postcoital (8) • Contraceptive substances to be used after COITUS. These agents include high doses of ...

https://druginfo.nlm.nih.gov/drugportal/drug/categories/c

... but was originally screened in a drug development program oriented toward discovering new post-coital contraceptive agents. ... It is a synthetic derivative of triphenylethylene but was originally screened in a drug development program oriented toward ... discovering new post-coital contraceptive agents.. In its testing, tamoxifen had proved effective in rats but not in women. It ... It is a synthetic derivative of triphenylethylene ...

https://www.news-medical.net/health/Tamoxifen-Mechanism.aspx

https://en.wikipedia.org/wiki/Fenestrel

The oral postcoital emergency contraceptive products (e.g., Plan B and others) are not to be used by females who suspect or ... Synthetic progestin with high progestational and androgenic activity. Used for routine contraception and/or menorrhagia as an ... Hormonal contraceptives include combination oral contraceptives, non-oral combination contraceptives, and contraceptives ... Hormonal contraceptives include combination oral contraceptives, non-oral combination contraceptives, and contraceptives ...

https://www.pdr.net/drug-summary/plan-b-one-step?druglabelid=573

https://en.wikipedia.org/wiki/Anordiol

Drugs used for this purpose are called emergency contraceptive pills, post-coital pills, or morning after pills. Emergency ... Levonorgestrel is a synthetic hormone used in birth control pills for over 35 years. Plan B can reduce a womans risk of ... 9. Oral contraceptives have been used for four decades, and this product has been approved and used safely since 1999. How ... Oral contraceptives as a class of drugs are only available by prescription. This product has been used safely by prescription ...

https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/fdas-decision-regarding-plan-b-questions-and-answers

Effectiveness of emergency postcoital contraception may be diminished.. Menopausal Hormone Replacement Therapy. EFV, ETR, NVP. ... Hormonal Contraceptives. EFV. Ethinyl estradiol ↔ Levonorgestrel (metabolite of oral norgestimate) AUC ↓ 83% Norelgestromin ( ... With estradiol or conjugated estrogen (equine and synthetic): ↓ estrogen possible ↓ medroxyprogesterone possible ↓ micronized ... See Hormonal Contraceptives for other progestin-NNRTI interactions Monitor menopausal symptoms. The lowest dose of hormonal ...

https://aidsinfo.nih.gov/guidelines/html/1/adult-and-adolescent-arv-guidelines/285/nnrti-drug-interactions

Postcoital Contraceptives (Morning After Pill)IBA 12/2015 - 01/2011. 2. Insulin (Novolin)FDA Link 10/2015 - 09/2005. ... Estradiol Congeners (Synthetic Estrogens)IBA 02/2015 - 04/2013. 2. Conjugated (USP) Estrogens (Premarin)FDA Link 10/2014 - 04/ ... Molecular modulation of estrogen-induced apoptosis by synthetic progestins in hormone replacement therapy: an insight into the ...

https://www.curehunter.com/public/authorSummary-Jordan,%20V%20Craig.do?keywordId=D004967

Contraceptives, Postcoital, Synthetic. *Norpregnadienes. *Receptors, Progesterone. *ulipristal acetate. Grant support. *R24 ...

https://www.ncbi.nlm.nih.gov/pubmed/22770793?dopt=Abstract

Contraceptives, Postcoital / Contraceptives, Postcoital, Synthetic Language: English Journal: Indian J Exp Biol Year: 1977 Type ... Contraceptives, Postcoital / Contraceptives, Postcoital, Synthetic Language: English Journal: Indian J Exp Biol Year: 1977 Type ... Animals , Benzopyrans/pharmacology , Centchroman/pharmacology , Contraceptives, Postcoital , Contraceptives, Postcoital, ... Biological profile of Centchroman--a new post-coital contraceptive. Biological profile of Centchroman--a new post-coital ...

https://search.bvsalud.org/gim/resource/en/sea-61853

Contraceptives, Postcoital, Synthetic/adverse effects , Contraceptives, Postcoital, Synthetic/therapeutic use , Abortion, ... Contraceptives, Postcoital, Synthetic/administration & dosage , Contraceptives, Postcoital, Synthetic/pharmacokinetics , ... Animals , Contraceptives, Postcoital , Contraceptives, Postcoital, Synthetic , Depression, Chemical , Drug Evaluation, ... Animals , Contraceptives, Postcoital/pharmacology , Contraceptives, Postcoital, Synthetic/pharmacology , Ethinyl Estradiol/ ...

https://search.bvsalud.org/gim/?lang=en&q=mh:Contraceptives,+Postcoital,+Synthetic

Emergency contraceptive pills (ECPs), also known as "postcoital contraception" or the "morning-after pill," work by changing a ... They give the body a short, high burst of synthetic hormones that disrupt natural hormone production needed for ovulation and ... Some people call emergency contraceptive pills "morning-after pills." But you do not have to wait until the morning after. You ... The FDA currently approves three different types of emergency contraceptive pills: pills that contain only progestin, pills ...

https://www.ourbodiesourselves.org/book-excerpts/health-article/types-of-emergency-contraception-pills/

Chemical contraceptives, both long-term and emergency, use a synthetic version of the hormone progestin. Progestin has effects ... Ella boasts of 120 hours (5 days) of post-coital effectiveness. The drug is produced by the Paris-based pharmaceutical company ... 1] Levonogestrel is also the active ingredient in the Intra-uterine contraceptive Mirena and the contraceptive implants ... But Ella (generic name ulipristal acetate) is not a synthetic progestin that mimics the action of progesterone. The FDA press ...

https://www.culture-of-life.org/2010/08/26/unmasking-the-ella-masquerade-blurring-the-line-between-contraception-and-abortion/

Dixon GW, Schlesselman JJ, Ory HW et al: Ethinyl estradiol and conjugated estrogens as postcoital contraceptives. ... These corticosteroids are synthetic and much more potent than steroids naturally occurring in the body and typically last much ...

https://flightcaster.com/cheap-anabolic-supplements.html

... dedicated products or can be adapted for use from standard oral contraceptive pills. Emergency postcoital contraception should ... Emergency postcoital contraception, a method used to prevent pregnancy after unprotected sexual intercourse, is a highly ... the antiprogestin synthetic steroid RU 486 (mifepristone; Mifeprex), estrogen alone (high-dose ethinyl estradiol) and the ... 7. Vasilakis C, Jick SS, Jick H. The risk of venous thromboembolism in users of postcoital contraceptive pills. Contraception. ...

https://www.aafp.org/afp/2000/1115/p2287.html

Animals, Contraceptives, Postcoital, pharmacology, Contraceptives, Postcoital, Synthetic, administration & dosage, Eflornithine ... The effect of cotrimoxazole on oral contraceptive steroids in women. 1983 Grimmer S.F.M et al. Contraception cited 9 times ... Urinary concentrations of steroid glucuronides in women taking oral contraceptives. 1983 Shaw M.A et al. Contraception cited 1 ... Ten Egyptian women who were using the injectable contraceptive norethisterone oenanthate (NET-OEN) for at least 6 months were ...

https://academic.naver.com/search.naver?field=3&query=Contraception+28%EA%B6%8C+1%ED%98%B8

The pill is also known as the "Morning After" pill or as post-coital contraception, the emergency pill works within three days ... Emergency Contraceptives reduce the likelihood of becoming pregnant but do not protect against sexually transmitted diseases. ... bursts of synthetic that disrupts hormone patterns needed for pregnancy. EC is used within 120 hours after the intercourse and ... pregnancy can be prevented even after the intercourse by taking the Emergency Contraceptives pills (EC). These pills give the ...

http://ndri.com/news/lifestyles_condoms-189.html

Plan B: Emergency Contraceptive Pill. Plan B is a progestin-only emergency contraceptive pill (ECP) that can be taken within ... Post-Coital Oral Emergency Contraception. Post-coital oral emergency contraception is used for the prevention of pregnancy ... Progestin: Synthetic Progesterone. Progestin is a synthetic form of progesterone, a naturally occurring hormone, which plays an ... The first contraceptive pill, called Enovid, had been on the market since June 1960, and Rock was one of the leading ...

https://embryo.asu.edu/search?text=oral%20contraceptive%20pill

contraceptives (postcoital synthetic). *ethinyl estradiol. *levonorgestrel. *mifepristone. Ashok PW, Stalder C, Wagaarachchi PT ... mifepristone given in a 100 mg dose was a more effective post-coital contraceptive than the Yuzpe regimen. ... Mifepristone (RU 486) compared with high-dose estrogen and progestogen for emergency postcoital contraception. N Eng J Med 1992 ... Webb AM, Russell J, Elstein M. Comparison of Yuzpe regimen, danazol, and mifepristone (RU486) in oral postcoital contraception ...

http://ebn.bmj.com/content/6/1/14.full?related-urls=yes&legid=ebnurs

Contraceptives, Oral, Synthetic. *Contraceptives, Postcoital. *Cytochrome P-450 CYP2C8 Inhibitors. *Cytochrome P-450 CYP2C8 ... Mifepristone is a synthetic steroid with antiprogestational effects indicated for the medical termination of intrauterine ... activity and progestin and glucocorticoid receptor binding of the putative metabolites and synthetic derivatives of CDB-2914, ...

https://www.drugbank.ca/drugs/DB00834

Info Contraceptives, Oral, Synthetic. * Info Contraceptives, Postcoital. * Info Contraceptives, Postcoital, Synthetic. * Info ...

https://druginfo.nlm.nih.gov/drugportal/name/Mifepristone

https://en.m.wikipedia.org/wiki/Diethylstilbestrol

Post-coital contraception is started with coronary angiography, thereby inhibiting cD4/CCR5-positive are used to prazosin, ... Concomitant use is normal physiological conducting ventricular rate is converted to a synthetic prosta- cyclin, like reaction. ... 5 549 leukotriene receptor antagonist selective oestrogen contraceptive pill Retinol is retained. The newer progestogens, as ... 5 549 leukotriene receptor antagonist selective oestrogen contraceptive pill. Amphotericin is itself is constantly changing ...

http://imagenenaccion.org/how-long-for-lamictal-side-effects-to-go-away

No need to rule out pregnancy with postcoital contraceptive regimens.126 127 128 136 Postcoital contraceptive regimens (i.e., ... Contraceptives containing synthetic progestinic steroids.106 117 119 120 125 a. Uses for Progestins (Etonogestrel, ... Postcoital (emergency) contraception: Irregular vaginal bleeding also possible with postcoital contraceptive regimens;106 126 ... Progestin contraceptives administered after intercourse (postcoital) produce contraceptive effects by inhibiting or delaying ...

https://www.drugs.com/monograph/progestins-etonogestrel-levonorgestrel-norethindrone.html

In February 1975, the FDA said it had not yet approved DES as a postcoital contraceptive, but would after March 8, 1975 permit ... contraceptive) use of diethylstilbestrol (DES), a synthetic estrogen. ... In May 1973, in an attempt to restrict off-label use of DES as a postcoital contraceptive to emergency situations such as rape ... To discourage off-label use of DES as a postcoital contraceptive, in February 1975 the FDA ordered DES 25 mg (and higher) ...

https://diethylstilbestrol.co.uk/tag/des-1st-generation/

For use as postcoital contraception within 72 hours of unprotected intercourse or known or suspected contraceptive failure - for use in females who have no known contraindications to use, have achieved menarche, and are not known or suspected to be pregnant. (pdr.net)
Emergency contraception is a method of preventing pregnancy to be used after a contraceptive fails or after unprotected sex. (fda.gov)
Emergency contraception refers to the use of medication or the insertion of a copper intrauterine device to prevent pregnancy after the occurance of unprotected sex intercourse or failure of a contraceptive method in a woman who does not desire pregnancy. (bvsalud.org)
Emergency contraceptive pills (ECPs), also known as "postcoital contraception" or the "morning-after pill," work by changing a woman's hormone levels in the same ways birth control pills and other hormonal methods work. (ourbodiesourselves.org)
Emergency postcoital contraception, a method used to prevent pregnancy after unprotected sexual intercourse, is a highly effective but underutilized birth control option. (aafp.org)
Emergency postcoital contraception should be considered as a primary prevention health service to women of childbearing age. (aafp.org)
Adapted with permission from Glasier A. Emergency postcoital contraception. (aafp.org)
The birth control pill, more commonly known as "the pill" is a form of contraception taken daily in pill form and consisting of synthetic hormones formulated to prevent ovulation, fertilization, and implantation of a fertilized egg. (asu.edu)
In women seeking emergency contraception within 72 hours after an episode of unprotected sexual intercourse, mifepristone given in a 100 mg dose was a more effective post-coital contraceptive than the Yuzpe regimen. (bmj.com)
It is a kind of emergency contraception, referring as a drug or device used to prevent pregnancy after unprotected sexual intercourse[including sexual assault] or after a recognized contraceptive failure [1] . (chemicalbook.com)
Some combination birth control pills may be used in higher dosages as morning after pills (MAPs), for postcoital emergency contraception. (earthslab.com)
This also means that while spermicide is often used as a stand-alone method of contraception, ContraGel is only approved for use with a barrier contraceptive ie, a diaphragm, FemCap, or Caya. (frontierproductinfo.com)
Česká republika Its formulation increases the effectiveness of the barrier contraceptive, but on its own ContraGel is not an effective method of contraception. (frontierproductinfo.com)
D. Rabone, "Postcoital Contraception. (rolandjb.tk)
Progestin-only emergency contraception offers a regimen that is more effective than combination oral contraceptive pills, with fewer reported side effects. (aafp.org)
Lutera is indicated for the prevention of pregnancy in women who elect to use oral contraceptives as a method of contraception. (rxlist.com)
Table II lists the typical accidental pregnancy rates for users of combination oral contraceptives and other methods of contraception. (rxlist.com)
Emergency Contraceptive Pills: The FDA has concluded that certain combined oral contraceptives containing ethinyl estradiol and norgestrel or levonorgestrel are safe and effective for use as postcoital emergency contraception. (rxlist.com)
Two synthetic estrogens are available contraception, with the fewest side of hormonal contraception. (who.int)
Buy Postpone-72 1.5mg (Levonorgestrel 1.5mg) , Levonorgestrel, is an emergency hormonal contraceptive used to help prevent a pregnancy when taken within 72 hours (3 days) of having had unprotected sex or if usual method of contraception has failed. (onlinegenericmedicine.com)
See A.L. Muller and others, "Postcoital Treatment with Levonorgestrel Does Not Disrupt Postfertilization Events in the Rat," Contraception, vol. 67 (2003): 415-419. (lifeethics.org)
Emergency contraception poses the juridical question of whether a post-intercourse contraceptive constitutes as an abortifacient in Islam. (fiqhacademy.com)
In order to answer, one must first define pregnancy and understand the mechanisms of action for natural and artificial contraception, especially the three common emergency contraceptives: levonorgestrel (LNG), ulipristal acetate (UPA), and copper intrauterine devices (IUD). (fiqhacademy.com)

Emergency contraceptives contain the hormones estrogen and progestin (levonorgestrel), either separately or in combination. (fda.gov)
Levonorgestrel is a synthetic hormone used in birth control pills for over 35 years. (fda.gov)
A pesar de lo extendido del uso de la anticoncepción de emergencia (AE) con levonorgestrel (LNG) en el mundo, el mecanismo de acción continúa siendo discutido, lo que ha sido aprovechado para que grupos confesionales aaquen su uso, argumentando que la misma es abortiva. (bvsalud.org)
1] The FDA refers to Ella as an emergency contraceptive, even comparing it in its literature to levonorgestrel. (culture-of-life.org)
Levonorgestrel is marketed mostly as a combination oral contraceptive under several brand names such as Alesse, Triphasil, and Min-Ovral. (chemicalbook.com)
Indication Levonorgestrel is a progestin-only emergency contraceptive indicated for the prevention of pregnancy following unprotected intercourse or a known or suspected contraceptive failure. (chemicalbook.com)
Pharmacodynamics Levonorgestrel is a synthetic form of the naturally occurring female sex hormone, progesterone [1] . (chemicalbook.com)
Levonorgestrel tricks the body processes into thinking that ovulation has already occurred, by maintaining high levels of the synthetic progesterone. (chemicalbook.com)
Never has a medication been more misunderstood than poor Plan B (levonorgestrel or LNG), a post coital contraceptive (a.k.a. morning-after pill). (drjengunter.com)
Plan B is levonorgestrel, a progestin (a synthetic version of the hormone progesterone). (drjengunter.com)
Progestins make the lining of the uterus less hospitable to implantation of the increase the risk of east cancer (if given before menopause) and decrease Drug to know: levonorgestrel (Mirena IUD Plan B emergency contraceptive). (villa-agata.eu)
Contraceptive, Data mining , Levonorgestrel. (who.int)
Each active, white tablet (21) contains 0.1 mg of levonorgestrel, d (-)-13β-ethyl-17α-ethinyl-17β- hydroxygon-4-en-3-one, a totally synthetic progestogen, and 0.02 mg of ethinyl estradiol, 17α-ethinyl- 1,3,5(10)-estratriene-3,17β-diol. (rxlist.com)
A single preovulatory 10 mg dose of mifepristone delays ovulation by 3 to 4 days and is as effective an emergency contraceptive as a single 1.5 mg dose of the progestin levonorgestrel. (bionity.com)
21 orange active tablets each containing 0.1 mg of levonorgestrel, d(-)-13β-ethyl-17α-ethinyl-17β- hydroxygon-4-en-3-one, a totally synthetic progestogen, and 0.02 mg of ethinyl estradiol, 17α-ethinyl- 1,3,5(10)-estratriene-3, 17β-diol. (rxlist.com)
Levonorgestrel tablets, 0.75 mg is not intended for routine use as a contraceptive. (nih.gov)
Take one tablet of Levonorgestrel tablets, 0.75 mg orally as soon as possible within 72 hours after unprotected intercourse or a known or suspected contraceptive failure. (nih.gov)
ECPs have not been shown to cause a postfertilization event-a change in the uterus that could interfere with implantation of a fertilized egg.29 Some researchers argue that an interference with the implantation of a fertilized egg is unlikely to happen because progestins, whether natural or synthetic, help to sustain pregnancy.30 In addition, there is no evidence that one burst of levonorgestrel without estrogen can prevent implantation. (lifeethics.org)

Dixon GW, Schlesselman JJ, Ory HW et al: Ethinyl estradiol and conjugated estrogens as postcoital contraceptives. (flightcaster.com)
Hormonal birth control methods use a higher concentration of synthetic progesterone and a lower concentration of synthetic estrogens to prevent ovulation. (earthslab.com)
Several types are available, but the combination pill, which contains both synthetic progesterone and estrogens, is most commonly used. (earthslab.com)
However, because of the lower risk of cardiovascular toxicity, bioidentical parenteral estrogens like polyestradiol phosphate have been recommended over oral synthetic estrogens like DES. (assignmentpoint.com)
A number of studies have found that improve your health estrogens as postcoital contraceptive agents. (vagabundomagazine.com)
Allen and Doisey identified the "estrus stimulating principle", endogenous estrogens that could activate tumors of the breast, and subsequent research in synthetic chemistry identified nonsteroidal estrogens. (glowm.com)
Therefore, it is biologically plausible to expect that synthetic estrogens and progestins, such as those found in contemporary formulation of the daily birth control pill, and administered at higher doses as a 'morning-after' treatment, would also adversely influence various implantation factors. (abortionpills.ca)

Prevention of conception after unprotected intercourse (including known or suspected contraceptive failure) as an emergency contraceptive ("morning-after" pills). (drugs.com)
ella is a progesterone agonist/antagonist emergency contraceptive indicated for prevention of pregnancy following unprotected intercourse or a known or suspected contraceptive failure. (nih.gov)
One tablet taken orally as soon as possible, within 120 hours (5 days) after unprotected intercourse or a known or suspected contraceptive failure. (nih.gov)

Progestin (alone, or in combination with estrogen) also can prevent ovulation, which is its primary contraceptive quality. (culture-of-life.org)
They give the body a short, high burst of synthetic hormones that disrupt natural hormone production needed for ovulation and pregnancy. (ourbodiesourselves.org)
The aim of this study was to use measurements of urinary steroid glucuronides to confirm the suppression of ovulation in women taking oral contraceptives. (naver.com)
The released progesterone acts similarly to an oral contraceptive by inhibiting ovulation, and the implant is effective for up to five years. (earthslab.com)
The operating principle of the female hormonal contraceptives is that they prevent ovulation. (ahefv.com)
ontraception or birth control prevents preg- biologically active progestogen that inhibits ovu- nancy by interfering with the normal process lation or fertilization and is used as an oral emer- of ovulation, fertilization, and implantation gency contraceptive (EC) (6). (who.int)
Mifepristone as a regular contraceptive at 2 mg daily prevents ovulation (1 mg daily does not). (bionity.com)
Lack of ovulation during the period of use of combined oral contraceptives provides rest to the ovaries and endometrium that is important in the presence of reproductive disease. (medicalj-center.info)

Molecular modulation of estrogen-induced apoptosis by synthetic progestins in hormone replacement therapy: an insight into the women's health initiative study. (curehunter.com)
The 19-nortestosterone derivatives were developed for use as progestins in oral contraceptives, and while their predominant activity is progestational, they exhibit androgenic and other activities. (chemicalbook.com)
Most of the synthetic progestins are extensively metabolized to inactive products that are excreted mainly in the urine. (chemicalbook.com)
The synthetic progestins have much longer half-lives, e.g., approximately 7 hours for norethindrone, 16 hours for norgestrel, 12 hours for gestodene, and 24 hours for MPA [6] . (chemicalbook.com)
Using pills that contain a man-made (synthetic) form of the hormone progesterone called progestins. (medlineplus.gov)
Because of the reported side effects of synthetic analogs called "progestins," there has been interest in replicating the natural hormone for clinical use. (aafp.org)
An oral micronized progesterone preparation has improved bioavailability and fewer reported side effects compared with synthetic progestins. (aafp.org)
New progestins for use in combination oral contraceptive pills were specifically developed to reduce androgenic symptoms. (aafp.org)
Because of the poor oral absorption of progesterone and its susceptibility to rapid first-pass metabolism in the liver, a variety of oral, injectable and implantable synthetic analogs, called "progestins," have been developed. (aafp.org)
Unlike synthetic progestins, micronized progesterone has not been shown to affect mood, 9 decrease high-density lipoprotein (HDL) cholesterol levels 10 , 11 or adversely affect pregnancy outcome. (aafp.org)

Drugs used for this purpose are called emergency contraceptive pills, post-coital pills, or morning after pills. (fda.gov)
The FDA currently approves three different types of emergency contraceptive pills: pills that contain only progestin, pills that contain both progestin and estrogen, and pills that contain the antiprogestin- ulipristal acetate. (ourbodiesourselves.org)
Some people call emergency contraceptive pills "morning-after pills. (ourbodiesourselves.org)
These regimens are packaged as Food and Drug Administration labeled, dedicated products or can be adapted for use from standard oral contraceptive pills. (aafp.org)
pregnancy can be prevented even after the intercourse by taking the Emergency Contraceptives pills (EC). (ndri.com)
These pills give the body a short high, bursts of synthetic that disrupts hormone patterns needed for pregnancy. (ndri.com)
Dinger J, Minh TD, Buttmann N, Bardenheuer K. Effectiveness of oral contraceptive pills in a large U.S. cohort comparing progestogen and regimen. (medscape.com)
Two emergency contraceptive pills may be bought without a prescription. (medlineplus.gov)
Investigation Employing Ethinyl Estradiol Combined with dl-Norgestrel.EmErgEncy contracEptivE pills. (rolandjb.tk)
Secondly, if there was an obvious failure of contraceptive like a condom to break, you can use emergency contraceptive, is also called post-coital pills. (ahefv.com)
Modern hormonal contraceptives have a variety of forms: pills (combination containing two hormones, progesterone and estrogen, as well as pure progestogen, or mini-pill), implants (in Russia they are not) and injectable drugs. (ahefv.com)
It is intended for emergency use following unprotected intercourse, contraceptive failure or misuse (such as forgotten pills or torn condoms). (onlinegenericmedicine.com)
Emergency contraceptive pills cannot interrupt an established pregnancy or harm a developing embryo. (onlinegenericmedicine.com)
Emergency contraceptive pills (ECPs) are taken in the absence of birth control pills (BCPs) and after the failure of other contraceptives during intercourse, hence its common reference as "the morning-after pill. (fiqhacademy.com)

But Ella (generic name ulipristal acetate) is not a synthetic progestin that mimics the action of progesterone. (culture-of-life.org)
Dress them up as 'contraceptives' all you want, progesterone antagonists are abortion drugs. (culture-of-life.org)
Norplant is a set of tiny silicone rods containing synthetic progesterone that are surgically implanted deep to the skin of the arm or over the scapula . (earthslab.com)
Depo-Provera is a synthetic progesterone that is administered by muscular injection at three-month intervals. (earthslab.com)
Reduced quantities of circulating progesterone, effects on tubal motility resulting in the faster passage of the ovum into the uterus, and suppression of carbonic anhydrase production in the endometrium may all play a role in the drug's postcoital contraceptive efficacy. (assignmentpoint.com)
First, the synthetic hormones present in the once-a-day birth control pill bind to and interact with the same receptors that natural estrogen and progesterone attach to. (abortionpills.ca)
LNG, a synthetic hormone, lowers chances of pregnancy by 75-89% if taken within three days, although one may take it up to five days after intercourse, [10] while UPA, a "progesterone receptor modulator," [11] lowers chances of pregnancy by 85% if taken within five days post-intercourse. (fiqhacademy.com)

Mifepristone is a synthetic steroid with antiprogestational effects indicated for the medical termination of intrauterine pregnancy through 49 days' pregnancy. (pharmacycode.com)
It is not advisable to use ECPs as your only protection against pregnancy if you are sexually active or planning to be, because they are not as effective as other contraceptive methods. (ourbodiesourselves.org)
Plan B is a progestin-only emergency contraceptive pill (ECP) that can be taken within seventy-two hours of unprotected sex in order to prevent an unwanted pregnancy. (asu.edu)
However, research suggests that emergency contraceptives have no long-term effects on the pregnancy or developing baby. (medlineplus.gov)
In addition, dual-protection methods which join contraceptives to antiretroviral agents to protect women against both unwanted pregnancy and transmission of human immunodeficiency virus (HIV), would meet a major need. (fiapac.org)
It is used as an abortifacient in the first two months of pregnancy, and in smaller doses as an emergency contraceptive . (bionity.com)
Oral contraceptives recognized as the most effective way to prevent unwanted pregnancy. (medicalj-center.info)
Some studies suggest that the long-term use of oral contraceptives in young women before their first pregnancy may increase breast cancer risk. (glowm.com)
A history of ectopic pregnancy is not a contraindication to use of this emergency contraceptive method. (nih.gov)

A partir de una viñeta clínica, en la cual se describe el caso de una paciente obesa que resultó embarazada luego de utilizar anticoncepción hormonal de emergencia tras una relación sexual no protegida, se realizó una búsqueda bibliográfica para establecer la efectividad del método en pacientes con esta característica (obesidad). (bvsalud.org)
La búsqueda identificó un metaanálisis que relacionó al triple la probabilidad de embarazo en pacientes con índice de masa corporal superior a 30 kg/m2 que utilizaron anticoncepción de emergencia hormonal. (bvsalud.org)
Birth control methods may be categorized into several groups based on their mode of action: hormonal, chemical and behavioral contraceptive methods, anti-implantation devices, sterilization, and induced abortion. (earthslab.com)
Male hormonal contraceptives exist, but are still in the research stage and are not widely used. (ahefv.com)
Identifying specific genes and the proteins induced by these genes and finding molecules that specifically antagonize gene action will open new avenues for the development of contraceptives that do not modify the hormonal profile of the individual. (fiapac.org)
Change natural hormonal levels through the application of synthetic analogues are far from harmless circumstance. (medicalj-center.info)

Anderson FD, Gibbons W, Portman D. Safety and efficacy of an extended-regimen oral contraceptive utilizing continuous low-dose ethinyl estradiol. (medscape.com)
Jick SS, Kaye JA, Russmann S, Jick H. Risk of nonfatal venous thromboembolism in women using a contraceptive transdermal patch and oral contraceptives containing norgestimate and 35 microg of ethinyl estradiol. (medscape.com)
A comparative study of two contraceptive vaginal rings releasing norethindrone acetate and differing doses of ethinyl estradiol. (medscape.com)
about ethinyl estradiol, a synthetic estradiol used most typically in oral contraceptive but also used by. (rolandjb.tk)
21 white LO/OVRAL tablets, each containing 0.3 mg of norgestrel ( dl -13-beta-ethyl-17-alpha-ethinyl-17-beta-hydroxygon-4-en-3-one), a totally synthetic progestogen, and 0.03 mg of ethinyl estradiol (19-nor-17α-pregna-1,3,5 (10)-trien-20-yne-3,17-diol), and 7 pink inert tablets. (drugs.com)

Chemical contraceptives, both long-term and emergency, use a synthetic version of the hormone progestin. (culture-of-life.org)
For 45mins really did seem to be increasingly drawn to such synthetic version of the hormone testosterone. (real-whitby.co.uk)
[1] [2] DES is a synthetic form of the female hormone estrogen that was prescribed to pregnant women between about 1940 and 1971 to prevent miscarriage and premature labor. (cdc.gov)
This is a bit of a spoiler alert because a synthetic version of a pro-gestational hormone is unlikely to do the exact opposite. (drjengunter.com)
The effects of exogenous hormones in the form of oral contraceptives and hormone replacement therapy (HRT) on breast cancer have been studied extensively. (glowm.com)

Nisterime (INN), also known as 2α-chloro-4,5α-dihydrotestosterone 3-O-(p-nitrophenyl)oxime or as 2α-chloro-5α-androstan-17β-ol-3-one 3-O-(p-nitrophenyl)oxime, is a synthetic anabolic-androgenic steroid (AAS) and a derivative of dihydrotestosterone (DHT) that was never marketed. (wikipedia.org)
Mifepristone is a synthetic steroid compound used as a pharmaceutical. (bionity.com)

A birth control patch is a small adhesive skin patch containing the synthetic hormones. (earthslab.com)
A vaginal ring is a soft plastic ring that is wedged into the superior part of the vagina , where it remains and releases synthetic hormones over a three-week period. (earthslab.com)
Only synthetic female hormones are popular as methods of birth control online in Canada. (ahefv.com)

transdermal gels and sprays are in early stages of research and a one-year contraceptive vaginal ring is in the last stages of development. (fiapac.org)
Among these are new implants, medicated intrauterine systems, contraceptive vaginal rings, transdermal patches with longer duration of action, and several new combined oral contraceptives. (fiapac.org)

Multinational comparative clinical trial of long-acting injectable contraceptives: Norethisterone enanthate given in two dosage regimens and depot-medroxyprogesterone acetate. (naver.com)

Nine women taking long-term oral contraceptive steroids (Trinordiol) were studied during a cycle while taking cotrimoxazole (1 gm twice daily) and the results were compared to. (naver.com)
Abernethy DR, Greenblatt DJ, Divoli M, Arendt R, Ochs HR, Shader RI(1982)Impairment of diazepam metabolism by low-dose estrogen-containing oral contraceptive steroids. (springer.com)
Back DJ, Breckenridge AM, Crawford FE, Orme MLE, Rowe PH(1980d)Phenobarbitone interaction with oral contraceptive steroids in the rabbit and rat. (springer.com)

The copper intrauterine device, or IUD, is a long-term, reversible contraceptive first introduced by Howard Tatum and Jamie Zipper in 1967. (asu.edu)

The use of safe, effective emergency postcoital contraceptive methods could result in 1 million fewer abortions and 2 million fewer unintended pregnancies each year in the United States. (aafp.org)
Contraceptive methods are designed to prevent sperm from reaching and penetrating a secondary oocyte, which leads to the formation of an ovum. (earthslab.com)
Firstly, when using both of two methods dramatically increases contraceptive reliability, because it is extremely unlikely that just two tools will fail simultaneously. (ahefv.com)
Future contraceptive methods: What to look forward to? (fiapac.org)
New methods currently under development are designed to meet the challenges of expanding contraceptive choices for both women and men and, of answering an unmet need for contraceptives that would satisfy new categories of users. (fiapac.org)
Current contraceptive methods do have many benefits: some improve menstrual bleeding patterns, alleviate dysmenorrhea and acne, and sometimes pre-menstrual syndrome. (fiapac.org)
Should new contraceptive methods provide additional protection against breast cancer they would also have wide appeal. (fiapac.org)
These new methods have been developed to meet the objectives of expanding contraceptive choices for both women and men and, of answering an unmet need for contraceptives with long-term action that meet the expectations of consumers. (fiapac.org)
The second night was much better but I'm not sure whether Chinaga can take credit here: my husband and I have just changed contraceptive methods, which meant an increase in libido for me, plus we tried a new position that was fantastic. (mg.co.za)
The efficacy of these contraceptive methods, except sterilization, the IUD , and Norplant System, depends upon the reliability with which they are used. (rxlist.com)
Newer contraceptive methods and new techniques for old methods (such as hysteroscopic sterilization) are attractive to patients, and their contraceptive provider (or referring provider) should have a grasp of the wide range of options. (netce.com)
Contraceptive methods based on immunological processes and techniques, such as the use of CONTRACEPTIVE VACCINES. (uchicago.edu)

Source: Trussell J. Contraceptive efficacy. (rxlist.com)

Depending on their constituents this type of a contraceptive pill works by interfering either in the ovulatory, fertilization or implantation process. (onlinegenericmedicine.com)

Ten Egyptian women who were using the injectable contraceptive norethisterone oenanthate (NET-OEN) for at least 6 months were monitored weeekly for a period of 12 weeks. (naver.com)

Aside from abortifacients, herbal contraceptives in folklore have also included a few preventative measures. (wikidoc.org)

Exclusion criteria were use of oral contraceptives or hepatic enzyme inducing drugs, chronic adrenal failure, long term corticosteroid treatment, breast feeding, allergy, or contraindications to mifepristone or to oestrogen and progestogen. (bmj.com)
It is possible to find a containing COCPs (20µg-35 µg) have is a low-potency progestogen, and contraceptive to suit every patient's replaced COCPs with a content of fairly nonandrogenic. (who.int)

One type of ECP is the Levonogestrel emergency contraceptive pill. (onlinegenericmedicine.com)
[13] Nonetheless, LNG based Plan B remains the most popular emergency contraceptive pill in the US, especially since it does not require a prescription. (fiqhacademy.com)

CHICAGO, Illinois - An investigational oral synthetic androgen shows promise as a possible male contraceptive pill in a new month-long study. (medscape.com)
During a press briefing, Page showed data from a multinational survey in which 60% to 80% of men indicated that they would be interested in a reversible male contraceptive if one were available, and of those, more than 30% prefer a daily pill over injected formulations. (medscape.com)
Efforts so far to develop a male contraceptive have been challenging because of the potential for hepatotoxicity and need for multiple daily dosing, she explained, adding: "[DMAU] is very different. (medscape.com)
Simplicity, reversibility, and effectiveness are the desired features of a male contraceptive. (fiapac.org)

Contraceptive Norethindrone Acetate Online. (rolandjb.tk)

Many men say they would prefer a daily pill as reversible contraceptive, rather than long-acting injections or topical gels, which are also in development," she noted. (medscape.com)

Fenestrel (INN, USAN) (developmental code name ORF-3858) is a synthetic, nonsteroidal estrogen that was developed as a postcoital contraceptive in the 1960s but was never marketed. (wikipedia.org)
[6] It is a synthetic and nonsteroidal estrogen of the stilbestrol group, and differs from the natural estrogen estradiol in various ways. (wikipedia.org)

Standard contraindications for use of combined oral contraceptives (class label). (clinicaltrials.gov)

The contraceptive regimen consists of 1 dose every 3 months. (medscape.com)
Progestin (mini-pill) oral contraceptives containing the progestin meager dose, have minimal side effects. (medicalj-center.info)

However, ella (ulipristal) is more effective as a post coital contraceptive and a Copper IUD is the most effective, although both require a prescription and are significantly more expensive than generic Plan B. If you absolutely do not want to get pregnant ella or a post-coital copper IUD are better choices, but just less practical. (drjengunter.com)

Emergency Contraceptives reduce the likelihood of becoming pregnant but do not protect against sexually transmitted diseases. (ndri.com)

These corticosteroids are synthetic and much more potent than steroids naturally occurring in the body and typically last much longer. (flightcaster.com)
Akpoviroro JO, Mangalam M, Jenkins N, Fotherby K(1981)Binding of the contraceptive steroids medroxyprogesterone acetate and ethynyloestradiol in blood of various species. (springer.com)
Ester bound to the Testosterone chemical structure negative side effects we experience with steroids which can literally destroy result, which indicates an exceptionally high concentration of augmented natural or synthetic testosterone. (rioloft.com)

Kovalevsky G, Barnhart K. Norplant and other implantable contraceptives. (medscape.com)

Barrier contraceptives prevent the ingress of live sperm in the uterus. (ahefv.com)

As Caya® is a relatively new product there are very limited data available on how effective it is as a contraceptive. (frontierproductinfo.com)
Oral contraceptives are highly effective. (rxlist.com)
The purpose of this course is to provide healthcare professionals with the information necessary to advise patients and prescribe effective and appropriate contraceptives. (netce.com)

Combination oral contraceptives act by suppression of gonadotropins. (drugs.com)

As one of the researchers involved in the development of the oral contraceptive pill, Min Chueh Chang helped to revolutionize the birth control movement. (asu.edu)
These findings, together with evidence showing an association between later maternal age at birth and increased breast cancer risk in daughters have been used to suggest that in utero exposure to the potent, synthetic estrogen, DES, may be associated with increased breast cancer risk. (diethylstilbestrol.co.uk)
The oldest forms of birth control included coitus interruptus , pessaries , and the ingestion of herbs that were believed to be contraceptive or abortifacient . (wikidoc.org)
The earliest record of birth control use is instructions on creating a contraceptive pessary from Ancient Egypt. (wikidoc.org)

With long-term use as an oral contraceptive reduces the risk of inflammation of the pelvic organs, iron deficiency anemia, reduces the likelihood of fibro-cystic mastopathy, neoplasms of the ovaries and endometrium, incl. (drdoping.com)
They are not now available but may still be found in situ in some older users Pharmacologically active devices The addition of copper to a contraceptive device produces a direct effect on the endometrium by interfering with endometrial oestrogen-binding sites and depressing uptake of thymidine into DNA. (slideplayer.com)

While at the Tribute to to evaluate response order, Nicole and Paris are a such original aircraft to his contraceptive sharing a 1,200-metre-long long-term heist and a summer to make to Janet Leding for Mother's X. Kent not 's out what they said and as content, he is the conseils 're not at the paper guilt. (newviewgraphics.com)

basa en la administración combinada de etinil estradiol. (rolandjb.tk)

abdominal or pelvic pain postcoital bleeding. (villa-agata.eu)

S9005 Mifepristone in Meningioma - Full Text View - ClinicalTrials.gov (clinicaltrials.gov)

Novel Therapeutics in Posttraumatic Stress Disorder (PTSD): A Randomized Clinical Trial of Mifepristone - Full Text View -... (clinicaltrials.gov)

V Craig Jordan's Research on Estrogens (Estrogen)
| CureHunter — V Craig Jordan's Research on Estrogens (Estrogen) | CureHunter (curehunter.com)

Cheap anabolic supplements - Oral Steroids (flightcaster.com)

NAVER Academic > Search... (academic.naver.com)

Search | The Embryo Project Encyclopedia (embryo.asu.edu)

Diethylstilbestrol - Wikipedia (en.m.wikipedia.org)

DES 1st generation Archives - Diethylstilbestrol DES (diethylstilbestrol.co.uk)

Diethylstilbestrol syndrome | Genetic and Rare Diseases Information Center (GARD) - an NCATS Program (phgkb.cdc.gov)

Overnight Rx Store: Accutane in india prices new pharmacy (cadasb.org)

Private Drugstore: Chemical name of viagra all brand pills! (meownowfl.org)

Diseases5

Chemicals and Drugs40

Analytical, Diagnostic and Therapeutic Techniques and Equipment23

Psychiatry and Psychology7

Phenomena and Processes15

Disciplines and Occupations1

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture2

Information Science4

Named Groups2

Health Care13

Antimutagenic effects of centchroman--a contraceptive and a candidate drug for breast cancer in multiple mutational assays. (1/25)

CDB-2914: anti-progestational/anti-glucocorticoid profile and post-coital anti-fertility activity in rats and rabbits. (2/25)

A single mid-follicular dose of CDB-2914, a new antiprogestin, inhibits folliculogenesis and endometrial differentiation in normally cycling women. (3/25)

Circulating concentrations of the antiprogestins CDB-2914 and mifepristone in the female rhesus monkey following various routes of administration. (4/25)

Emergency postcoital contraception. (5/25)

Pharmacokinetic study of different dosing regimens of levonorgestrel for emergency contraception in healthy women. (6/25)

Post-coital administration of levonorgestrel does not interfere with post-fertilization events in the new-world monkey Cebus apella. (7/25)

Mechanisms of action of mifepristone and levonorgestrel when used for emergency contraception. (8/25)

Contraceptives, Postcoital

Contraceptives, Postcoital, Hormonal

Contraceptives, Oral

Coitus

Contraceptives, Oral, Combined

Metrorrhagia

Contraceptive Agents

Menstruation-Inducing Agents

Contraceptives, Oral, Hormonal

Contraceptives, Postcoital, Synthetic

Contraceptive Agents, Female

Uterine Hemorrhage

Ethinyl Estradiol

Contraceptives, Oral, Synthetic

Contraceptive Devices

Contraception

Contraceptive Devices, Female

Contraception, Postcoital

Contraception Behavior

Contraceptive Agents, Male

Intrauterine Devices

Family Planning Services

Desogestrel

Norgestrel

Levonorgestrel

Pregnancy

Mestranol

Norethindrone

Vaccines, Contraceptive

Pregnancy, Unplanned

Sterilization, Reproductive

Pregnancy, Unwanted

Medroxyprogesterone Acetate

Spermatocidal Agents

Norethynodrel

Menstruation

Intrauterine Devices, Copper

Ethynodiol Diacetate

Contraception, Immunologic

Abortion, Induced

Norpregnenes

Progestins

Ethinyl Estradiol-Norgestrel Combination

Synthetic Biology

Contraceptives, Oral, Sequential

Sterilization, Tubal

Genes, Synthetic

Progesterone Congeners

Androstenes

Menstrual Cycle

Parity

Intrauterine Devices, Medicated

Health Knowledge, Attitudes, Practice

Contraceptive Devices, Male

Megestrol

Pregnancy in Adolescence

Menstruation Disturbances

Drug Implants

Sex Education

Medroxyprogesterone

Estradiol Congeners

Spermatogenesis-Blocking Agents

Ovulation Inhibition

Norpregnadienes

Fertility

Condoms

Sexual Behavior

Transdermal Patch

Ethisterone

Molecular Sequence Data

Estrogens

Amino Acid Sequence

Risk Factors

Time Factors

Nonoxynol

Abortion Applicants

Xanthurenates

Peptides

Age Factors

Abortion, Legal