Telmisartan (international name: Telmisartan) is an angiotensin receptor blocker (ARB), which is used to treat hypertension. At present, the efficacy of most antihypertensive drugs can only last 10 hour. Telmisartan has the longest curative effect among similar drugs. Clinical studies have shown that telmisartan can lower blood pressure for 24 hours, including in the morning when the risk of cardiovascular disease is the highest. Clinical studies have proved that telmisartan can not only lower the blood pressure of high-risk cardiovascular patients and diabetic patients, but also provide additional cardiovascular protection and reduce their chances of death, myocardial infarction or stroke due to cardiovascular diseases.