Both of the medications included in Telmavas-H Tablet aid in the management of high blood pressure. It is typically used when blood pressure cannot be adequately controlled by a single medication. Your chance of experiencing a heart attack or stroke later on can be decreased by lowering your blood pressure. Telmisartan and hydrochlorothiazide are the two medications that make up Telmavas-H Tablet. It is typically used when blood pressure cannot be adequately controlled by a single medication. In order to facilitate easier blood flow, telmisartan relaxes and widens your blood vessels. Your blood pressure will drop as a result. As a diuretic (water pill), hydrochlorothiazide lowers blood pressure by increasing urine production. Controlling your blood pressure lowers your chances of kidney issues, heart attacks, and strokes. For the medication to work, it must be taken as directed on a regular basis. Taking this medication normally has no immediate effects on you, but it keeps you healthy over time.