a preliminary double-blind , randomized trial was carried out in general practice to compare the efficacy of treatment with diflunisal ( 500 mg ) twice daily and a combination of dextropropoxyphene ( 65 mg ) plus paracetemol ( 650 mg ) 3-times daily for 3 days in relieving pain associated with strains and sprains .
C0033493
dextropropoxyphene
C0030193
pain