Meta-Analysis of Antisecretory and Gastrokinetic Compounds in Functional Dyspepsia

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In view of therapeutic advances, we carried out meta-analysis of results from 18 randomized, controlled clinical studies to update a previous meta-analysis (1) and to provide an overview of clinical trials involving treatment of functional dyspepsia. The studies were included only if they satisfied inclusion and exclusion criteria and assessed treatment of functional dyspepsia with the antisecretory compounds cimetidine and ranitidine and the gastrokinetic compounds cisapride and domperidone. Outcomes of each of these trials were classified in terms of differences in therapeutic success between active treatment and placebo. For anti-secretory treatments, the 95% confidence intervals for the difference in therapeutic success between active treatment and placebo were inconsistent for cimetidine, but analysis of both ranitidine trials gave favorable results. For the gastrokinetic compounds cisapride and domperidone, the differences in success rates were generally higher and more in favor of active treatment than placebo. By combining the results from both antisecretory treatments and comparing them with the combined results for gastrokinetic compounds, we observed that gastrokinetic compounds had a greater difference in success rates than did antisecretory agents. Overall, our meta-analysis shows that antisecretory treatment with cimetidine or ranitidine offers little advantage over placebo, whereas gastrokinetic treatment with cisapride or domperidone is significantly better than placebo for treatment of functional dyspepsia.

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