One hundred and one active gastric ulcer patients concluded an 8-week, randomized, double-blind multicentre study, planned with the aim to compare the effectiveness of a new H2 blocker, nizatidine, with ranitidine. Thirty-three patients received 300 mg nizatidine at bedtime, 34,150 mg nizatidine b.i.d. and 34,150 mg ranitidine b.i.d. The three groups were well matched for the common clinical parameters. After 4 weeks, healing rates were 51.5% (confidence intervals 95%: 34.1-68.9%), 61.8% (41.2-82.4%), 76.5% (51-102%), respectively. At this check point ranitidine showed a significantly better outcome than did 300 mg nizatidine at bedtime (p less than 0.05). After 8 weeks, healing rates were 81.8% (54.1-109.5%), 88.2% (58.7-117.7%) and 88.2% (58.7-117.7%); these differences were not statistically significant. Age, sex, ulcer symptoms, alcohol and cigarette consumption, concomitant treatments, ulcer size and site and length of ulcer history were all found not to influence ulcer healing. Pain relief and antacid consumption were comparable in the three treatment groups. No clinically significant unwanted effects were recorded throughout the study. Nizatidine can, in our opinion, be successfully used in the treatment of active gastric ulcer.
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