Telmisartan is an angiotensin II receptor blocker used for hypertension and cardiovascular risk reduction in high risk patients, helping relax arteries and lower blood pressure to protect the heart, brain, and kidneys. It selectively blocks AT1 receptors to inhibit vasoconstriction and aldosterone effects, and has a long half life enabling once daily dosing with sustained control. Telmisartan also shows partial PPAR‑γ activity, which may aid insulin sensitivity and metabolic profiles, offering additional vascular benefits beyond blood pressure lowering. Clinical references support broad use alone or in combination therapy.