País: Estados Unidos
Idioma: inglés
Fuente: NLM (National Library of Medicine)
NIFEDIPINE (UNII: I9ZF7L6G2L) (NIFEDIPINE - UNII:I9ZF7L6G2L)
Bayer HealthCare Pharmaceuticals Inc.
NIFEDIPINE
NIFEDIPINE 30 mg
PRESCRIPTION DRUG
New Drug Application
ADALAT CC- NIFEDIPINE TABLET, FILM COATED BAYER HEALTHCARE PHARMACEUTICALS INC. ---------- ADALAT CC (NIFEDIPINE) EXTENDED RELEASE TABLETS FOR ORAL USE DESCRIPTION Adalat CC is an extended release tablet dosage form of the calcium channel blocker nifedipine. Nifedipine is 3,5-pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-dimethyl ester, C H N O , and has the structural formula: Nifedipine is a yellow crystalline substance, practically insoluble in water but soluble in ethanol. It has a molecular weight of 346.3. Adalat CC tablets consist of an external coat and an internal core. Both contain nifedipine, the coat as a slow release formulation and the core as a fast release formulation. Adalat CC tablets contain either: 30, 60, or 90 mg of nifedipine for once-a-day oral administration. Inert ingredients in the formulation are: hydroxypropylcellulose, lactose, corn starch, crospovidone, microcrystalline cellulose, silicon dioxide, and magnesium stearate. The inert ingredients in the film coating for Adalat CC 30 and 60 are: hypromellose, polyethylene glycol, ferric oxide, and titanium dioxide. The inert ingredients in the film coating for Adalat CC 90 are: hypromellose, polyethylene glycol and ferric oxide CLINICAL PHARMACOLOGY Nifedipine is a calcium ion influx inhibitor (slow-channel blocker or calcium ion antagonist) which inhibits the transmembrane influx of calcium ions into vascular smooth muscle and cardiac muscle. The contractile processes of vascular smooth muscle and cardiac muscle are dependent upon the movement of extracellular calcium ions into these cells through specific ion channels. Nifedipine selectively inhibits calcium ion influx across the cell membrane of vascular smooth muscle and cardiac muscle without altering serum calcium concentrations. MECHANISM OF ACTION The mechanism by which nifedipine reduces arterial blood pressure involves peripheral arterial vasodilatation and, consequently, a reduction in peripheral vascular resistance. The increased peripheral vascular re Leer el documento completo