Olmesartan is used to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Olmesartan belongs to a class of drugs called angiotensin receptor blockers (ARBs). It works by relaxing blood vessels so that blood can flow more easily

Amlodipine is used  to treat high blood pressure in adults and children 6 years and older. It is also used to treat certain types of angina (chest pain)  and coronary artery disease narrowing of the blood vessels that supply blood to the heart.