Losartan potassium (LOSAR) is a prescription medication used to treat high blood pressure and heart failure. It works by blocking the action of a hormone in the body that increases blood pressure. LOSAR comes in tablet form and is available in 25, 50, and 100 mg strengths. It is easy to take and has been proven to be safe, effective, and well-tolerated. Purchase LOSAR from our online store today and have it delivered right to your door.