Metoprolol is a medication belonging to a class of drugs called beta-blockers. It is primarily used to treat high blood pressure, heart failure, and certain types of irregular heartbeats. By blocking the effects of adrenaline on the heart, metoprolol helps to lower heart rate and blood pressure, making it easier for the heart to pump blood. This medication can be taken in various forms, including tablets and extended-release capsules. Common side effects may include fatigue, dizziness, and cold hands or feet. Patients should consult their healthcare provider for proper dosage and to discuss any potential interactions with other medications.