Telmisartan 20mg/40mg/80mg is an angiotensin II receptor blocker (ARB) used to treat high blood pressure (hypertension) and reduce the risk of cardiovascular events like heart attacks and strokes. It works by blocking the action of angiotensin II, a hormone that constricts blood vessels, thereby helping to relax and widen the blood vessels. This lowers blood pressure and reduces the strain on the heart. Telmisartan is also used to protect the kidneys in people with type 2 diabetes and hypertension. It can be taken alone or in combination with other antihypertensive medications to effectively manage blood pressure and prevent complications associated with heart disease.