Overview: Benazepril is used to treat high blood pressure. It works by helping your blood vessels relax and widen. Common side effects may include headache and cough. Serious side effects are. Benazepril is used alone or in combination with other medications to treat high blood pressure in adults and children at least 6 years old. Lowering blood pressure may lower your risk of a stroke or heart attack. Benazepril (Lotensin) is an oral medication used to treat high blood pressure. Learn about side effects, warnings, dosage, and more. Benazepril is used to treat patients with high blood pressure. Learn about side effects, drug interactions, dosages, warnings, and more. Benazepril is used alone or in combination with other medications to treat high blood pressure. Benazepril is in a class of medications called angiotensin-converting enzyme (ACE) inhibitors. It works by decreasing certain chemicals that tighten the blood vessels, so blood flows more smoothly. What is this medication? BENAZEPRIL (ben AY ze pril) treats high blood pressure. It works by relaxing blood vessels, which decreases the amount of work the heart has to do. It belongs to a group of medications called ACE inhibitors. Advertisement Lowering blood pressure reduces the risk of strokes and heart attacks. Benazepril is an angiotensin converting enzyme (ACE) inhibitor. It works by blocking a substance in the body that causes blood vessels to tighten. As a result, benazepril relaxes the blood vessels. Benazepril package insert / prescribing information for healthcare professionals. Includes: indications, dosage, adverse reactions and pharmacology. Benazepril, sold under the brand name Lotensin among others, is a medication used to treat high blood pressure, heart failure, and diabetic kidney disease. [2] Benazepril hydrochloride tablets are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions.