the disposition of the enantiomers of the antiarrhythmic drug flecainide has been studied in five extensive ( em ) and five poor ( pm ) metabolisers of sparteine/debrisoquine after administration of 50 mg of racemic flecainide acetate under conditions of high urinary flow rate and acidic urinary ph .
C0003195
antiarrhythmic drug
C0016229
flecainide