phenotyping was performed using the metabolic ratio ( mr ) calculated as mr = 0-10 h urinary output of dextromethorphan/0-10 h urinary output of dextrorphan , after oral administration of 40 mg ( 113.6 mumol ) of dextromethorphan hydrobromide .
C0011816
dextromethorphan
C0350422
dextromethorphan hydrobromide