Benazepril is used to treat patients with high blood pressure. Learn about side effects, drug interactions, dosages, warnings, and more. Benazepril (Lotensin) is an oral medication used to treat high blood pressure. Learn about side effects, warnings, dosage, and more. 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 Learn about benazepril (Lotensin) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Benazepril is used alone or together with other medicines to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. 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. 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, 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 package insert / prescribing information for healthcare professionals. Includes: indications, dosage, adverse reactions and pharmacology. 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.