Telmisartan/hydrochlorothiazide is commonly used to lower high blood pressure (hypertension).Telmisartan/hydrochlorothiazide may also be used for other conditions as determined by your healthcare provider.Telmisartan blocks receptors in your body that normally bind to a hormone called angiotensin II. When angiotensin II binds to these receptors, it causes your blood vessels to constrict. Blocking these receptors helps your blood vessels relax so that blood can move through them more easily.

Hydrochlorothiazide works by increasing how much you pee. It does this by helping the kidneys remove electrolytes, such as sodium (salt), and water from the body. It also appears to allow blood to flow more freely (less resistance to flow).

These effects can help lower blood pressure, and may reduce your risk for heart attack and stroke.