a bioequivalence study of promethazine hydrochloride ( 10- [ 2- ( dimethylamino ) propyl ] -phenothiazine monohydrochloride ) was conducted in 20 male human subjects with the purpose of comparing , under blind condition , the human serum levels of promethazine in three different formulations .
C0546876
promethazine hydrochloride
C0033405
promethazine