Country: United States
Language: English
Source: NLM (National Library of Medicine)
RANITIDINE HYDROCHLORIDE (UNII: BK76465IHM) (RANITIDINE - UNII:884KT10YB7)
Direct_Rx
ORAL
PRESCRIPTION DRUG
Ranitidine tablets USP are indicated in: 1. Short-term treatment of active duodenal ulcer. Most patients heal within 4 weeks. Studies available to date have not assessed the safety of ranitidine in uncomplicated duodenal ulcer for periods of more than 8 weeks. 2. Maintenance therapy for duodenal ulcer patients at reduced dosage after healing of acute ulcers. No placebo-controlled comparative studies have been carried out for periods of longer than 1 year. 3. The treatment of pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome and systemic mastocytosis). 4. Short-term treatment of active, benign gastric ulcer. Most patients heal within 6 weeks and the usefulness of further treatment has not been demonstrated. Studies available to date have not assessed the safety of ranitidine in uncomplicated, benign gastric ulcer for periods of more than 6 weeks. 5. Maintenance therapy for gastric ulcer patients at reduced dosage after healing of acute ulcers. Placebo-controlle
Ranitidine tablets USP 150 mg (ranitidine HCl USP equivalent to 150 mg of ranitidine) are pink colored, circular, biconvex, beveled edge film coated tablets with “G51” engraved on one side and “150” on the other side. They are available in bottles of 60 , 100 , and 500 tablets. Ranitidine tablets USP 300 mg (ranitidine HCl USP equivalent to 300 mg of ranitidine) are pink colored, circular, biconvex, beveled edge film coated tablets with “G51” engraved on one side and “300” on the other side. They are available in bottles of 30 ,100 and 250 tablets.
Abbreviated New Drug Application
RANITIDINE- RANITIDINE TABLET, FILM COATED DIRECT_RX ---------- RANITIDINE The active ingredient in ranitidine tablets USP 150 mg and 300 mg is ranitidine hydrochloride (HCl), USP, a histamine H2-receptor antagonist. Chemically it is N[2-[[[5-[(dimethylamino)methyl]-2- furanyl]methyl]thio]ethyl]-N'-methyl-2-nitro-1,1-ethenediamine, HCl. It has the following structure: [structure-ranitidine] The empirical formula is C13H22N4O3S•HCl, representing a molecular weight of 350.87. Ranitidine HCl USP is a white to pale yellow, granular substance that is soluble in water. It has a slightly bitter taste and sulfur like odor. Each ranitidine tablet USP 150 mg for oral administration contains 168 mg of ranitidine HCl USP equivalent to 150 mg of ranitidine. Each tablet also contains the inactive ingredients microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, magnesium stearate, FD&C Red # 40 Aluminum Lake, hypromellose, titanium dioxide, triacetin. Each ranitidine tablet USP 300 mg for oral administration contains 336 mg of ranitidine HCl USP equivalent to 300 mg of ranitidine. Each tablet also contains the inactive ingredients microcrystalline cellulose, croscarmellose sodium, colloidal silicon dioxide, magnesium stearate, FD&C Red # 40 Aluminum Lake, hypromellose, titanium dioxide, triacetin. Ranitidine is a competitive, reversible inhibitor of the action of histamine at the histamine H2-receptors, including receptors on the gastric cells. Ranitidine does not lower serum Ca++ in hypercalcemic states. Ranitidine is not an anticholinergic agent. Pharmacokinetics: Absorption: Ranitidine is 50% absorbed after oral administration, compared to an intravenous (IV) injection with mean peak levels of 440 to 545 ng/mL occurring 2 to 3 hours after a 150-mg dose. Absorption is not significantly impaired by the administration of food or antacids. Propantheline slightly delays and increases peak blood levels of ranitidine, probably by delaying gastric emptying and transit time. In one study, simultaneous admin Read the complete document