Aspirin, paracetamol, diflunisal, and gastrointestinal blood-loss.
D000082:Acetaminophen / Q000009:adverse effects*; D001241:Aspirin / Q000009:adverse effects*; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced*; D006801:Humans; D012459:Salicylates / Q000009:adverse effects*
D012459:Salicylates; D000082:Acetaminophen; D001241:Aspirin