subjects who had undergone dental impaction surgery and who had moderate to severe postoperative pain were given , under double-blind , randomized conditions , a single dose of either codeine 60 mg , aspirin 650 mg , ibuprofen 400 mg , aspirin 650 mg + codeine 60 mg , ibuprofen 400 mg + codeine 60 mg , or placebo .
C0030201
postoperative pain
C0020740
ibuprofen