 The subjects received a single oral dose of either Test or Reference product, containing fixed-dose combination of Quinapril 20 mg and Hydrochlorothiazide 25 mg after an overnight fast of at least 10 hours. The study drug was administered as per the SAS generated Randomization Code, 30 minutes after serving of a high-fat high-calorie breakfast under supervision of a trained Medical Officer in each period.Blood samples were collected predose and at intervals over 72 hours after each dose. A 7-day interval was maintained between each dosing in the Study Periods I-IV. 