Metoprolol belongs to the class of medications called beta-blockers. Metoprolol is used to treat high blood pressure and prevent the symptoms of certain types of angina (chest pain). It is also used to help reduce the risk of death right after a heart attack. Metoprolol is also taken by people who have had a heart attack to reduce the risk of having another one. Metoprolol is often used in combination with other high blood pressure medications such as diuretics (water pills) when the use of one medication by itself is not enough to control blood pressure. This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of this medication may not be used for all of the conditions discussed here. Metoprolol is used for a number of conditions, including hypertension, angina, acute myocardial infarction, supraventricular tachycardia, ventricular tachycardia, congestive heart failure, and prevention of migraine headaches. receptors in the heart, metoprolol is also prescribed for off-label use in performance anxiety, social anxiety disorder, and other anxiety disorders. Metoprolol is sold in formulations that can be taken by mouth or given intravenously. Side effects, especially with higher doses, include dizziness, drowsiness, fatigue, diarrhea, unusual dreams, trouble sleeping, depression, and vision problems. Metoprolol may also reduce blood flow to the hands or feet, causing them to feel numb and cold; smoking may worsen this effect. Due to the high penetration across the blood-brain barrier, lipophilic beta blockers such as propranolol and metoprolol are more likely than other less lipophilic beta blockers to cause sleep disturbances such as insomnia and vivid dreams and nightmares. Serious side effects that are advised to be reported immediately include symptoms of bradycardia (resting heart rate slower than 60 beats per minute), persistent symptoms of dizziness, fainting and unusual fatigue, bluish discoloration of the fingers and toes, numbness/tingling/swelling of the hands or feet, sexual dysfunction, erectile dysfunction, hair loss, mental/mood changes, depression, breathing difficulty, cough, dyslipidemia and increased thirst.
Metoprolol and metoprolol ER are both beta-blockers, and treat certain heart conditions by blocking the effects of the hormone, epinephrine, which causes the heart to beat slower. See More These 5 Types of Medications Can Cause Erectile Dysfunction Metoprolol succinate is just one of many drugs known as beta blockers. These medications block the effects of epinephrine on the heart, which slows the heartbeat and reduces blood pressure. These drugs also improve blood flow, reducing the force of the heartbeat.