The efficacy and safety of therapy with H2-blockers in the elderly were assessed in a prospective, randomized, open study of 51 consecutive ulcer patients. All subjects were over 65 years of age and had active disease (endoscopically diagnosed). Twenty-three patients were assigned to famotidine 40 mg and 28 to raniridine 300 mg. Both agents were administered at night for 6 weeks in the acute phase of the trial. In the long-term evaluation, 27 patients received therapy at half the previous dosage for 6 months. Endoscopic evaluation were scheduled at the 6th week, 6th month, and at every symptomatic relapse. Clinical evaluations were repeated at the 3rd and 6th week and at the 3rd and 6th months. Routine laboratory tests were performed at the...