Hypertension: Convertin is indicated in all grades of essential hypertension, and in renovascular hypertension. Heart failure: Convertin is indicated for the treatment of symptomatic heart failure, usually in combination with diuretics and digitalis. In addition, convertin is indicated to reduce mortality in patients with all classes of heart failure. Asymptomatic left ventricular dysfunction: Convertin is indicated to retard the development of symptomatic heart failure in asymptomatic patients with left ventricular dysfunction.