title: Cimetidine and effect of warfarin.
mesh_terms: D002927:Cimetidine / Q000008:administration & dosage / Q000009:adverse effects*; D004357:Drug Synergism; D006146:Guanidines / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011516:Prothrombin / Q000037:antagonists & inhibitors*; D011517:Prothrombin Time; D014859:Warfarin / Q000008:administration & dosage*
chemical_list: D006146:Guanidines; D014859:Warfarin; D002927:Cimetidine; D011516:Prothrombin