Carvedilol (generic) Coreg and Coreg XR (brands) is a type of diuretic drug that treats high blood pressure (hypertension) and angina, manages How does it work (mechanism of action)?; What are the uses for carvedilol? . Tablets of 3.125, 6.25, 12.5, and 25 mg. . Psoriasis: See what it looks like...