piroxicam 40 mg was given once daily for two days , followed by 20 mg once daily and is compared with naproxen 750 mg daily for two days , followed by 500 mg daily ( n = 85 ) and with naproxen 1,000 mg daily ( n = 83 ) in the treatment of primary dysmenorrhea .
C0027396
naproxen
C0013390
dysmenorrhea