Metoprolol is a beta-blocker that affects the heart and circulation (blood flow through arteries and veins).
Metoprolol is used to treat angina (chest pain) and hypertension (high blood pressure).
Metoprolol is also used to lower your risk of death or needing to be hospitalized for heart failure.
Metoprolol injection is used during the early phase of a heart attack to lower the risk of death.
