The role of H2‐receptor antagonists in the prevention of NSAID‐induced gastrointestinal damage

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Abstract
SUMMARY: Non‐steroidal anti‐inflammatory drugs (NSAIDs) induce gastric and duodenal damage in animals and humans. The possible protection afforded by cimetidine against acute and short‐term NSAID‐induced mucosal damage was evaluated in five studies. Cimetidine 200 mg once daily and 400 mg once daily was found to protect the gastric mucosa against damage induced by a single dose of aspirin 1300 mg; this protection was found to be independent of gastric acid secretion. Cimetidine 200 mg q.d.s. was found to protect the stomach and duodenum against damage induced by 14 days’treatment with aspirin 650 mg q.d.s. Duodenal and gastric damage induced during a 7‐day treatment period with naproxen 500 mg b.d. was prevented by cimetidine 400 mg b.d.; this dose of cimetidine also provided significant duodenal protection against damage induced by I week of therapy with indomethacin 50 mg t.d.s. There is no correlation between upper gastrointestinal symptoms, or between mucosal prostanoids, and the presence or absence of mucosal damage. Cimetidine is therefore effective in the prevention of mucosal damage induced by short‐term treatment with NSAIDs.