Azor - that is a combination of amlodipine and olmesartan, used to treat high blood pressure (hypertension). Lowering blood pressure may lower your risk of a stroke or heart attack. OLMESARTAN is an angiotensin II receptor antagonist. Olmesartan keeps blood vessels from narrowing, which lowers blood pressure and improves blood flow. AMLODIPINE is a calcium channel blocker. It works by relaxing the muscles of your heart and blood vessels.