What are the Side Effects of Metroprolol?

Get the important information that you should know in using metroprolol. Familiarize yourselves with the metroprolol side effects and precautions.

Metroprolol Overview

Metroprolol is the drug used chiefly to treat hypertension or high blood pressure. It is also prescribed to prevent heart attack and to treat chest pain (angina pectoris), tremors, migraine, congestive heart failure, bleeding in the esophagus, and hyperthyroidism (as adjunct treatment). It is sold under the brand names Toprol-XL and Lopressor in the United States.  In other countries, metroprolol is marketed in different brand names such as Neobloc, Corvitol, Minax, Metrol, Betaloc, Presolol, Selokeen, and others. Generic metroprolol are also available in drug stores.

Metroprolol belongs to the family of beta-adrenergic blockers which block the beta-1 receptors of adrenaline, the hormone that increases blood pressure and heart rate. Blocking the receptors of adrenaline will cause the blood vessels to relax which will result to decrease in heart rate and blood pressure.
Precautions in Using Metroprolol

There are certain precautions that you should know before and after taking metroprolol. Knowing these precautions will protect you against the possible harm that the drug may cause.

  • Do not take metroprolol if you are allergic to any of its ingredients. Ask for the ingredients of metroprolol drugs to the pharmacist. Make sure to tell your doctor if you have any allergies.
  • Do not take metroprolol if you have slow heart rate, heart failure, kidney diseases, and other diseases that can cause low blood pressure. Make sure to mention these diseases to your doctor along with other diseases that you have or have ever had. Don’t forget to tell your doctor if you have asthma, diabetes, lung disease, or hyperthyroidism.
  • Do not drink alcohol because it adds to the drowsiness caused by taking metroprolol. If you are drowsy after taking the drug, do not drive, use a machine, or do any work that requires alertness in order to avoid accidents.
  • Do not stop taking metroprolol without first getting your doctor’s advice. If you suddenly stop taking metroprolol, you may experience chest pain or heart attack. Even you feel okay, do not stop taking the drug because sometimes the symptoms of high blood pressure are not noticeable.
  • Tell your doctor if you are taking or planning to take any prescription & non prescription medications, vitamins, herbal medicines, and nutritional supplements. There are medications that could possibly interact with metroprolol and will cause harm to you.
  • If you are having any surgery, even a dental one, tell your doctor or dentist that you are taking metroprolol.
  • If you missed a dose, take the missed dose as soon as you remember it. However, if the missed dose is four hours away, skip it, and take the drug at the next regularly scheduled time. Do not take extra dose to make up the missed one.
  • Tell your doctor if you are pregnant, planning to get pregnant, or breast-feeding. Call your doctor if you get pregnant while taking metroprolol.
  • Read and follow the directions written on your prescription label. If there is anything you can’t understand in the label, ask your doctor or a qualified pharmacist.

Metroprolol Side Effects

The less serious side effects of metroprolol include decreased sex drive, impotence, dizziness, nausea, runny nose, tiredness, dry mouth, stomach ache, bloating, constipation, itching, cold feeling in the hands and feet, and heartburn. Tell your doctor if these symptoms become severe or do not go away.

The serious side effects of metroprolol include shortness of breath, wheezing, fainting, unusual weight gain, irregular heartbeat, and swelling of the hands, feet, ankles, or lower legs. Call your doctor immediately if you are experiencing any of these metroprolol side effects.

Take note that metroprolol may cause other side effects other than those listed here. If you have any unusual problems while taking metroprolol, tell them to your doctor.[ad#afterpost]


Medline Plus, National Institute of Health


The information in this article is not a substitute for professional medical advice. Please seek advice from your doctor before taking any action suggested on this article.