Levonorgestrel
... acetate and levonorgestrel butanoate are C17β esters of levonorgestrel. Levonorgestrel has a molecular weight of ... Ester prodrugs of levonorgestrel such as levonorgestrel acetate and levonorgestrel butanoate have been developed and studied as ... and as a levonorgestrel-only method. The levonorgestrel-only method uses levonorgestrel 1.5 mg (as a single dose or as two 0.75 ... The bioavailability of levonorgestrel is approximately 95% (range 85 to 100%). The plasma protein binding of levonorgestrel is ...
Levonorgestrel cyclopropylcarboxylate
Analogues of levonorgestrel cyclopropylcarboxylate include levonorgestrel cyclobutylcarboxylate (HRP-001) and levonorgestrel ... Levonorgestrel cyclopropylcarboxylate (developmental code name HRP-003), or levonorgestrel 17β-cyclopropylcarboxylate, is a ...
Levonorgestrel butanoate
It is the C17β butanoate ester of levonorgestrel, and acts as a prodrug of levonorgestrel in the body. The drug is at or beyond ... Levonorgestrel butanoate (LNG-B) (developmental code name HRP-002), or levonorgestrel 17β-butanoate, is a steroidal progestin ... The drug has a well-established safety record owing to the use of levonorgestrel as an oral contraceptive since the 1960s. List ...
Levonorgestrel acetate
... (LNG-A), or levonorgestrel 17β-acetate, also known as 3-ketonorgestimate, is a progestin which was never ... for levonorgestrel). Along with levonorgestrel butanoate, LNG-A was investigated as a hormonal contraceptive by the Population ... It is a progestogen ester and is the C17β acetate ester and a prodrug of levonorgestrel. Norgestimate is the C3 oxime of LNG-A ... The Population Council also plans to test vaginal rings with two other progestins, ST-1435 and levonorgestrel acetate, alone ...
Levonorgestrel cyclobutylcarboxylate
Analogues of levonorgestrel cyclobutylcarboxylate include levonorgestrel butanoate (HRP-002) and levonorgestrel ... Levonorgestrel cyclobutylcarboxylate (or levonorgestrel 17β-cyclobutylcarboxylate; developmental code name HRP-001) is a ...
Levonorgestrel-releasing implant
... , sold under the brand name Jadelle among others, are devices that release levonorgestrel for ... A levonorgestrel-releasing implant was approved for medical use in 1983 in Finland and in the United States in 1990. It is on ... Levonorgestrel implants are approved in more than 60 countries and used by more than seven million women. As of 2015 it is ... Levonorgestrel-releasing implant is implanted under the skin in the upper arm of a woman, by creating a small incision and ...
Naari
Levonorgestrel BP 0.75 mg) • Fasile 1.5 (Levonorgestrel BP 1.5 mg) • Phem 21 (Levonorgestrel 0.15 mg & Ethinylestradiol 0.03 mg ... Levonorgestrel • Lynestrenol • Nandrolone Decanoate • Nandrolone Phenylpropionate • Norethisterone • Norethisterone Acetate • ... Tablets BP) • Phem 28 (Levonorgestrel 0.15 mg & Ethinylestradiol 0.03 mg Tablets BP with Ferrous Fumarate 60 mg Tablets BP) • ...
Hormonal contraception
A prescription for levonorgestrel is not needed and can be found over the counter at local pharmacies. Because levonorgestrel ... Levonorgestrel acts as an agonist of the progesterone receptor, preventing ovulation. Users of levonorgestrel often experience ... and My Way and regimens include a single 1.5 mg pill of levonorgestrel. Levonorgestrel EC pills should be taken up to 72 hours ... Studies show, Levonorgestrel (LNG) is releases into the body so rapidly that it is absorbed into the systemic circulation and ...
Hormonal intrauterine device
In comparison, oral contraceptives can contain 150 micrograms of levonorgestrel. The hormonal IUD releases the levonorgestrel ... The IUD with levonorgestrel was first approved for medical use in 1990 in Finland and in the United States in 2000. It is on ... Levonorgestrel is a progestogen, i.e. a progesterone receptor agonist. The hormonal IUD's primary mechanism of action is to ... In 2013 Skyla, a lower dose levonorgestrel IUD effective for up to three years, was approved by the FDA. Skyla has a different ...
Estrogen patch
"Estradiol mixture with levonorgestrel". Drug Information Portal. U.S. National Library of Medicine. "Estradiol mixture with ... Some patches are available with a progestin such as levonorgestrel, norethisterone acetate, or norelgestromin. Pharmacokinetics ...
Estradiol (medication)
... with levonorgestrel as Klimonorm; with medroxyprogesterone acetate as Divina and Indivina; and with norethisterone enantate as ... Transdermal patches with levonorgestrel (Climara Pro) and norethisterone acetate (Combipatch) Estradiol and estradiol esters ... "Comparative cross-over pharmacokinetic study on two types of postcoital contraceptive tablets containing levonorgestrel". ...
Emergency contraception
Generic one-pill levonorgestrel emergency contraceptives and all two-pill levonorgestrel emergency contraceptives will remain ... of levonorgestrel-only users vs 18.8% of 979 Yuzpe regimen users in 1998 WHO trial; 1.4% of 2,720 levonorgestrel-only users in ... 13 Levonorgestrel (LNG). The precise mode of action of levonorgestrel (LNG) is incompletely understood but it is thought to ... "confirming the effectiveness of levonorgestrel." After the WHO conducted a large trial comparing Yuzpe and levonorgestrel in ...
Progestogen (medication)
... levonorgestrel, levonorgestrel butanoate, desogestrel, and etonogestrel. The androgens that have been used in combination with ... The only exception was levo-norgestrel which was used in a very low dose, namely 100 µg daily (Fotherby et al. 1972). However, ... ISBN 978-0-19-957166-6. Ovulation may be suppressed in 15-40% of cycles by POPs containing levonorgestrel, norethisterone, or ... The progestins assessed included depot medroxyprogesterone acetate, levonorgestrel-containing contraceptive implants and ...
Intrauterine device
"Liletta: levonorgestrel-releasing intrauterine system" (PDF). www.fda.gov. Retrieved 14 March 2018. "Kyleena: Levonorgestrel- ... 13 Levonorgestrel (LNG). The precise mode of action of levonorgestrel (LNG) is incompletely understood but it is thought to ... Copper devices have a failure rate of about 0.8% while hormonal (levonorgestrel) devices fail about 0.2% of the time within the ... Hormonal IUDs (referred to as intrauterine systems in the UK) work by releasing a small amount of levonorgestrel, a progestin. ...
Hysterectomy
Levonorgestrel intrauterine devices are highly effective in limiting menstrual blood flow and improving other symptoms. Side ... Milsom I (2007). "The levonorgestrel-releasing intrauterine system as an alternative to hysterectomy in peri-menopausal women ... Depending on the indication there are alternatives to hysterectomy: Levonorgestrel intrauterine devices are highly effective at ... Bahamondes L, Bahamondes MV, Monteiro I (2008). "Levonorgestrel-releasing intrauterine system: uses and controversies". Expert ...
Contraceptive rights in New Zealand
... and ethinyloestradiol with levonorgestrel), and two formulations of the progestogen-only pill (levonorgestrel and ... Levonorgestrel implants (Jadelle) are available in New Zealand. These implants are subsidised, although there is a $22 charge ...
Prevalence of birth control
The levonorgestrel intrauterine system has been massively popular. Sterilization is popular in older age groups, among those 45 ...
Birth control pill formulations
90 μg levonorgestrel: continuous: 365 days/year, no placebo (US: Amethyst, Watson) 100 μg levonorgestrel: extended cycle: 84 ... 150 μg levonorgestrel: 21 day cycle + 7 days no pills (Canada: Min-Ovral 21; EU: Ovoplex 150/30; Sweden: Neovletta, Prionelle) ... 150 μg levonorgestrel: 21 day cycle + 7 days placebo (Canada: Min-Ovral 28; Sweden: Prionelle 28; RU: Rigevidon 21+7, Richter ... 250 μg levonorgestrel (US: Nordiol, Wyeth) 1.5 mg estradiol (as hemihydrate) 2.5 mg nomegestrol acetate: 24-day cycle + 4 ...
Family planning
The levonorgestrel intrauterine system has been massively popular. Sterilization is popular in older age groups, among those 45 ...
Nandrolone
The levorotatory form, levonorgestrel, provides the biologic activity. Third-generation gonanes (desogestrel, gestodene, and ... levonorgestrel, desogestrel, etonogestrel, gestodene, norgestimate, dienogest (actually a 17α-cyanomethyl-19-nortestosterone ...
Side effects of cyproterone acetate
Vasilakis-Scaramozza C, Jick H (October 2001). "Risk of venous thromboembolism with cyproterone or levonorgestrel ... and twice the risk of women who take a contraceptive pill containing the androgenic progestin levonorgestrel. The absolute risk ...
Birth control movement in the United States
Levonorgestrel (Plan B) was approved, by prescription, in 1999. Ebadi, Manuchair, "Levonorgestrel", in Desk Reference of ... Clinical Pharmacology, CRC Press, 2007, p. 338, ISBN 978-1-4200-4743-1. Updated FDA Action on Plan B (levonorgestrel) Tablets ...
Norethisterone
Stanczyk FZ, Roy S (July 1990). "Metabolism of levonorgestrel, norethindrone, and structurally related contraceptive steroids ... Stanczyk FZ, Roy S (July 1990). "Metabolism of levonorgestrel, norethindrone, and structurally related contraceptive steroids ... derivatives of levonorgestrel) and includes the following marketed medications: Several of these act as prodrugs of ...
Birth control in the United States
Levonorgestrel (Plan B) was approved, by prescription, in 1999. Ebadi, Manuchair, "Levonorgestrel", in Desk Reference of ... Clinical Pharmacology, CRC Press, 2007, p. 338, ISBN 978-1-4200-4743-1. Updated FDA Action on Plan B (levonorgestrel) Tablets ...
Combined hormonal contraception
"FDA Approves Twirla (levonorgestrel and ethinyl estradiol) Contraceptive Patch". Drugs.com. Retrieved 2021-09-20. Skin patch or ... Based on a study of 16 women using oral CHC 30 μg ethinyloestradiol/150 μg levonorgestrel and anti-epileptic drug lamotrigine ... with higher rates of venous thromboembolism compared to formulations containing a type of progesterone called levonorgestrel. ...
Emergency contraceptive availability by country
LNG refers to Levonorgestrel and UPA refers to Ulipristal acetate). "Countries with non-prescription access to EC". ... "How much does contraception cost?". Levonorgestrel emergency contraception and weight-based efficacy (PDF) (Report). p. 6. " ...
Birth control
... and is more effective than levonorgestrel. Mifepristone is also more effective than levonorgestrel, while copper IUDs are the ... Levonorgestrel pills, when used within 3 days, decrease the chance of pregnancy after a single episode of unprotected sex or ... Failure rates with the copper IUD is about 0.8% while the levonorgestrel IUD has a failure rates of 0.2% in the first year of ... For women who rarely have sex, the taking of the hormonal birth control levonorgestrel around the time of sex looks promising. ...
Beginning of pregnancy controversy
Rebecca Peck; Walter Rella; Julio Tudela; Justo Aznar; Bruno Mozzanega (February 2016). "Does levonorgestrel emergency ... Mozzanega, Bruno (2011). "How do levonorgestrel-only emergency contraceptive pills prevent pregnancy? Some considerations". ...
Norethisterone enanthate
Esters related to NETE include norethisterone acetate and levonorgestrel butanoate. NETE was introduced by Schering as ...
Extended cycle combined hormonal contraceptive
It contains 90 µg levonorgestrel and 20 µg ethinylestradiol in each pill, and is designed to be taken continuously with no ... "Seasonale (levonorgestrel/ethinyl estradiol) Tablets MACMIS ID #12748: 2004" (PDF). United States Department of Health & Human ... Seasonale contains 30 micrograms of ethinylestradiol and 150 micrograms of levonorgestrel in each active pill. Seasonale ... Levonorgestrel,dl-Norgestrel Third generation progestin: Norgestimate, Gestodene, Desogestrel Unclassified progestin: ...