• Nifedipine regularly reduces arterial pressure at rest and at a given level of exercise by dilating peripheral arterioles and reducing the total peripheral resistance (afterload) against which the heart works. (nih.gov)
  • They are coronary vasodilators that reduce arterial pressure and myocardial contractility. (pharmacology2000.com)
  • Nifedipine dilates the main coronary arteries and coronary arterioles, both in normal and ischemic regions, and is a potent inhibitor of coronary artery spasm, whether spontaneous or ergonovine-induced. (nih.gov)
  • This property increases myocardial oxygen delivery in patients with coronary artery spasm,and is responsible for the effectiveness of nifedipine in vasospastic (Prinzmetal's or variant) angina. (nih.gov)
  • By blocking the calcium channels, Nifedipine inhibits the spasm of the coronary artery and dilates the systemic arteries, results in a increase of myocardial oxygen supply and a decrease in systemic blood pressure. (pharmacycode.com)
  • Nifedipine is more a potent vasodilator and more effective in angina. (wikipedia.org)
  • Epoprostenol (prostacyclin), a naturally occurring prostaglandin, is a potent vasodilator and inhibitor of platelet aggregation. (medscape.com)
  • MESh caused a relaxing effect on KCl 80 mM-induced contraction and was less potent than nifedipine. (bvsalud.org)
  • Glyceryl nitrate or trinitrate or nitroglycerin is a vasodilator used to treat cardiac disorders like ischemia and mainly anal fissures. (e-lactancia.org)
  • Nitroglycerin is in a class of medications called vasodilators. (medlineplus.gov)
  • Nifedipine is a calcium ion influx inhibitor (slow-channel blocker or calcium ion antagonist) and inhibits the transmembrane influx of calcium ions into cardiac muscle and smooth muscle. (nih.gov)
  • Nifedipine selectively inhibits calcium ion influx across the cell membrane of cardiac muscle and vascular smooth muscle without changing serum calcium concentrations. (nih.gov)
  • A calcium channel blocker, nifedipine inhibits calcium ion flux across the slow calcium channels, thereby inhibiting the contractile process of cardiac and vascular smooth muscle. (medscape.com)
  • This unloading of the heart reduces myocardial energy consumption and oxygen requirements and probably accounts for the effectiveness of nifedipine in chronic stable angina. (nih.gov)
  • Nifedipine is a commonly used agent in treating hypertension and angina because of its vasodilator properties. (lml.com.ly)
  • Nifedipine is used to treat Prinzmetal's angina, hypertension, and other vascular disorders such as Raynaud's phenomenon. (pharmacycode.com)
  • Bij angina pectoris (hartkramp), hartritmestoornissen en bij hoge bloeddruk Side effects of these drugs include constipation, bradycardia, and hyperprolactinemia. (seagullindia.com)
  • In both patients these lesions receded during the course of therapy with a selective arteriolar vasodilator, nifedipine.These observations are discussed in relation to the possible pathogenesis of the retinopathy seen in patientswith sickle cell anemia. (researchwithrutgers.com)
  • The vascular endothelium modulates contractile responses to 5-HT and ET-1 in human subcutaneous resistance arteries but this effect is lost in patients with NPG, indicating a selective defect in agonist mediated release of endothelium derived vasodilators. (bmj.com)
  • The mechanism by which nifedipine reduces arterial blood pressure involves peripheral arterial vasodilatation and the resulting reduction in peripheral vascular resistance. (nih.gov)
  • Nifedipine is a peripheral arterial vasodilator which acts directly on vascular smooth muscle. (nih.gov)
  • The binding of nifedipine to voltage-dependent and possibly receptor-operated channels in vascular smooth muscle results in an inhibition of calcium influx through these channels. (nih.gov)
  • Still, its vasodilator effects on the vascular system were not reported yet. (bvsalud.org)
  • Fig. 1B), a powerful vasodilator made by vascular endothelium, was the 1st drug authorized by the U.S. Meals and Medication Administration (FDA) for the treating PAH. (scienceexhibitions.org)
  • He, G.W., Fan, K.Y., Chiu, S.W. and Chow, W.H. (2000) Injection of Vasodilators into Arterial Grafts through Cardiac Catheter to Relieve Spasm. (scirp.org)
  • This study was designed to examine the impact of a sustained release nifedipine formulation on Aldo biosynthesis and its clinical consequences. (lml.com.ly)
  • Patients with hepatic impairment (liver cirrhosis) have a longer disposition half-life and higher bioavailability of nifedipine than healthy volunteers. (nih.gov)
  • Vasodilators: These drugs help relax the blood vessels and improve blood flow. (rarediseaseshealthcenter.com)
  • Mothers have complained of headaches that commonly occur with the use of various vasodilators drugs. (e-lactancia.org)
  • The amount of nitrate / nitrite in this type of vasodilator drugs is of few milligrams, therefore, toxicity associated to nitrates such as methemoglobinemia in breastfed infants from treated mothers has not been reported (The dose of nitrite is Rectogesic 1.5 mg / 12 hours). (e-lactancia.org)
  • An inhibitory role of nifedipine on aldosterone (Aldo) biosynthesis has been documented in in vitro studies. (lml.com.ly)
  • The fall in the Aldo/PRA ratio during nifedipine treatment indicates that the previously reported in vitro inhibition of Aldo biosynthesis in adrenal cells is reproduced in vivo. (lml.com.ly)
  • Since hepatic biotransformation is the predominant route for the disposition of nifedipine, the pharmacokinetics may be altered in patients with chronic liver disease. (nih.gov)
  • Effects of nifedipine treatment on the renin-angiotensin-aldosterone axis. (lml.com.ly)
  • Early and late effects of nifedipine on Aldo, PRA, and Aldo/PRA ratio levels were studied in a single blind, placebo-controlled, 10-day pilot study. (lml.com.ly)
  • Each extended-release tablet, formulated as a once-a-day controlled release tablet for oral administration, delivers 30 or 60 mg of nifedipine. (nih.gov)
  • Nifedipine Extended-release Tablets meet USP Dissolution Test 3. (nih.gov)
  • When individual time points were examined in the normotensive subjects, Aldo/PRA levels were significantly lower on day 8 of nifedipine treatment at 1000, 1200, and 1400 h than corresponding values on the control day. (lml.com.ly)
  • Blood samples for the measurement of Aldo and PRA were obtained at 2-h intervals for 10 h on a control day and on days 1 and 8 of nifedipine treatment for the determination of baseline, early, and late values. (lml.com.ly)
  • Before the age of vasodilator therapy, most children died within 1-2 years of diagnosis, whereas adults had a median survival of 2-3 years. (medscape.com)
  • Phytochemical analysis of MESh suggests the presence of mannitol, previously reported as a vasodilator on aortic rings. (bvsalud.org)
  • Nifedipine capsules are formulated as soft gelatin capsules for oral administration each containing 10 mg nifedipine. (nih.gov)
  • Nifedipine is rapidly and fully absorbed after oral administration. (nih.gov)