Nifedipinedrug info

Nifedipine extended-release tablet, USP 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 17 H 18 N 2 O 6, and has the structural formula: Nifedipine USP is a yellow crystalline substance, practically insoluble in water but soluble in ethanol. It has a molecular weight of 346.3. Nifedipine extended-release 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. Nifedipine extended-release tablets contain either: 30, 60, or 90 mg of nifedipine for once-a-day oral administration. Inert ingredients in the formulation are hydroxypropylcellulose, lactose monohydrate, pregelatinized Starch, crospovidone, microcrystalline cellulose, colloidal silicon dioxide, magnesium stearate. The inert ingredients in the film coating for nifedipine extended-release tablets 30 mg and 60 mg are: hypromellose, titanium dioxide, polyethylene glycol, iron oxide yellow and iron oxide red. The inert ingredients in the film coating for nifedipine extended-release tablets 90 mg are hypromellose, titanium dioxide, polyethylene glycol, iron oxide yellow, iron oxide red and ferrosoferic oxide. USP Dissolution Test pending. structure