Question: what is the difference between toprol xl and toprol er?
Answer: Metoprolol, also referred to as metoprolol tartrate, is used to treat high blood pressure and chest pain, and to prevent heart attacks. Metoprolol ER, also known as metoprolol succinate, is also used to treat chest pain and high blood pressure, but unlike metoprolol, it should not be used to prevent heart attacks.