Coreg, also known as carvedilol, belongs to a group of drugs called non-cardioselective beta blockers. These beta blockers affect the bloodflow through the arteries and veins. Coreg affects the function of the heart, and is used by healthcare practitioners to treat heart failure and high blood pressure in patients. Coreg can also be used after an episode of a heart attack to help the heart pump the blood effectively. Coreg can also be prescribed by physicians for purposes other than the ones mentioned.