title: Letter: Naproxen (naprosyn) and gastrointestinal haemorrhage.
mesh_terms: D000083:Acetanilides / Q000009:adverse effects; D000328:Adult; D000368:Aged; D000893:Anti-Inflammatory Agents / Q000009:adverse effects*; D001241:Aspirin / Q000009:adverse effects; D001803:Blood Transfusion; D005260:Female; D005756:Gastritis / Q000139:chemically induced; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced*; D006396:Hematemesis / Q000139:chemically induced; D006801:Humans; D008297:Male; D008551:Melena / Q000139:chemically induced; D008738:Methyl Ethers / Q000009:adverse effects; D008875:Middle Aged; D009281:Naphthalenes / Q000009:adverse effects; D011422:Propionates / Q000009:adverse effects*; D012459:Salicylates / Q000009:adverse effects
chemical_list: D000083:Acetanilides; D000893:Anti-Inflammatory Agents; D008738:Methyl Ethers; D009281:Naphthalenes; D011422:Propionates; D012459:Salicylates; D001241:Aspirin