The safety of ranitidine in elderly versus non-elderly patients.

The authors conducted a retrospective review of 21 United States trials of ranitidine in acid peptic diseases and compared the adverse events in elderly (> or = 65 years) and nonelderly (< 65 years) patients. Ranitidine dosages ranged from 150 mg/day to 300 mg twice daily for treatment periods of 4 to 52 weeks. Of the 4041 patients included in this review, 402 elderly and 2188 nonelderly patients received ranitidine and 245 elderly and 1206 nonelderly patients received placebo; 29%, 29%, 32%, and 26% of these patients, respectively, reported some type of adverse event. When only drug-related adverse events (as judged by the investigators under blinded conditions) were evaluated, these percentages dropped to 2%, 2%, and 1% and 2%, respectively. Gastrointestinal adverse events (e.g., nausea and diarrhea) and central nervous system adverse events (e.g., headache and dizziness) were the most common (0.7% and 0.8%, respectively), with comparable incidence rates in the elderly and nonelderly patients. The authors conclude that ranitidine is as safe in elderly patients as it is in nonelderly patients. No difference in the incidence of adverse events was found between older and younger patients who received ranitidine or placebo.