Winbp CT 40 mg/6.25 mg Tablet is used to treat high blood pressure. It contains Olmesartan medoxomil and Chlorthalidone, which work by relaxing blood vessels. This allows the blood to flow more smoothly and the heart to pump more efficiently. Also, it removes extra water and certain electrolytes from the body. Together it lowers fluid overload, blood pressure and improves blood flow. In some cases, you may experience side effects such as headache, nausea, or dizziness. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and pre-existing medical conditions