Cipril H tablet is a combination of Lisinopril 5mg and Hydrochlorothiazide 12.5mg. Cipril H tablets contain Lisinopril, which is a medicine mostly used in the treatment of hypertension (increased blood pressure). It is used along with other medications to treat heart failure (a condition where the heart cannot pump sufficient blood). Cipril H also reduces the risk of heart attack and stroke. The Cipril H tablet works by relaxing blood vessels and thereby promoting smooth blood flow.