 The study was conducted as a open-label, balanced, randomized, two-treatment, two-period, two-sequence, single-dose, crossover, bioavailability study comparing Quinapril hydrochloride and Hydrochlorothiazide tablets 20 mg25 mg of OHM Laboratories Inc a subsidiary of Ranbaxy pharmaceuticals Inc with AccureticTM tablets 20 mg 25 mg containing quinapril hydrochloride 20 mg and hydrochlorothiazide 25 mg manufactured by Parke Davis Pharmaceuticals Limited, Vega Baja, PR 00694, Made in Germany and distributed by Parke-Davis, Division of Pfizer Inc. NY, NY 10017 in healthy, adult, male, human subjects under fasting condition. 