Country: United States
Language: English
Source: NLM (National Library of Medicine)
CIMETIDINE (UNII: 80061L1WGD) (CIMETIDINE - UNII:80061L1WGD)
REMEDYREPACK INC.
CIMETIDINE
CIMETIDINE 300 mg
PRESCRIPTION DRUG
Abbreviated New Drug Application
CIMETIDINE- CIMETIDINE TABLET, FILM COATED REMEDYREPACK INC. ---------- CIMETIDINE TABLETS USP 8192 8204 8305 RX ONLY DESCRIPTION Cimetidine is a histamine H -receptor antagonist. Chemically it is _N”_-cyano- _N_-methyl- _N’_-[2-[[(5- methyl-1 _H_-imidazol-4-yl)methyl]thio]-ethyl], guanidine. The molecular formula for cimetidine is C H N S; and the molecular weight is 252.35. The structural formula for cimetidine is: Cimetidine contains an imidazole ring, and is chemically related to histamine. Cimetidine has a bitter taste and characteristic odor. SOLUBILITY CHARACTERISTICS Cimetidine is soluble in alcohol, slightly soluble in water, very slightly soluble in chloroform and insoluble in ether. Each tablet, for oral administration, contains 300 mg, 400 mg, or 800 mg cimetidine, USP. In addition, each tablet contains the following inactive ingredients: corn starch, magnesium stearate, microcrystalline cellulose, povidone, sodium lauryl sulfate and sodium starch glycolate. The coating for the tablets contains: carnauba wax, hypromellose, polyethylene glycol, polysorbate 80, talc, titanium dioxide, and triethyl citrate. The coating for the 300 mg and 400 mg tablets also contains D&C Yellow No. 10 Aluminum Lake, FD&C Blue No. 1 Aluminum Lake, and FD&C Yellow No. 6 Aluminum Lake. CLINICAL PHARMACOLOGY Cimetidine competitively inhibits the action of histamine at the histamine H receptors of the parietal cells and thus is a histamine H -receptor antagonist. 2 10 16 6 2 2 Cimetidine is not an anticholinergic agent. Studies have shown that cimetidine inhibits both daytime and nocturnal basal gastric acid secretion. Cimetidine also inhibits gastric acid secretion stimulated by food, histamine, pentagastrin, caffeine and insulin. ANTISECRETORY ACTIVITY _1) Acid Secretion_ _Nocturnal_ Cimetidine 800 mg orally at bedtime reduces mean hourly H activity by greater than 85% over an eight-hour period in duodenal ulcer patients, with no effect on daytime acid secretion. Cimetidine 1600 mg orally at bedtime produces 100% inhibit Read the complete document