nineteen men with mild to moderate hypertension and without a history of cardiac arrhythmias were randomized ( double-blind ) into groups to receive hydrochlorothiazide ( hctz ) at a dose of 25 mg/day , hctz at 50 mg/day , or hctz ( 25 mg ) plus triamterene ( 50 mg ) for a six-month period after a three-week ( single-blind ) placebo period .
C0020538
hypertension
C0040869
triamterene