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Things you need to know about Metoprolol for blood pressure (Metoprolol)

MBBS
Medically Reviewed by MBBS ✓ Medically Reviewed
📅 Updated: Jul 14, 2026 • ⏱ 6 min read • Editorial policy
Things you need to know about Metoprolol for blood pressure (Metoprolol)
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Has your doctor prescribed you a medicine called Metoprolol? Maybe it's for your high blood pressure, or maybe it's for a heart condition. It's normal to be a little nervous and curious about a new medication. So, today we'll talk about exactly what Metoprolol is, what it does to the body, and what we need to be careful about when using this medicine.

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What kind of medicine is Metoprolol?

Simply put, Metoprolol is a drug that belongs to a class of drugs called 'beta blockers' . Its main function is to control your heart rate and blood pressure, helping your heart pump blood throughout the body without having to work as hard.

This medicine is mainly used for the following conditions:

  • High Blood Pressure: Control your blood pressure.
  • Heart Failure: Support the heart when it is in a weakened state.
  • Angina: Prevent chest pain caused by blockage of the arteries that supply blood to the heart.

Things you need to tell your doctor before taking this medicine

Before you start using Metoprolol, it is extremely important to tell your doctor about any other medical conditions you have, allergies, and other medications you are taking, as this medication may not be compatible with some medical conditions.

Be sure to tell us if you have these conditions. Why is it important?
Diabetes This medicine may affect blood sugar levels and may mask some of the symptoms of low blood sugar (hypoglycemia).
Heart or blood vessel disease (e.g., very slow heartbeat, heart block, Raynaud's disease) Metoprolol can further slow the heart rate, which can worsen existing heart conditions.
Kidney or liver disease Because diseases of these organs affect the process of removing drugs from the body, the dosage of the drug may need to be changed.
Lung or respiratory disease (e.g., asthma, emphysema) This medication can cause airway constriction and increase breathing difficulty.
Pheochromocytoma (a tumor of the adrenal gland) or thyroid disease Metoprolol may modify or mask the symptoms of these conditions.
If you are pregnant, trying to get pregnant, or breastfeeding Since this medication can affect the child, you should talk to your doctor and make the best decision.
Allergies to other medications, foods, or substances It is very important to inform your doctor if you are allergic to metoprolol or any other beta blocker.

How to use Metoprolol correctly?

  • This medicine is for oral use. Take it exactly as prescribed by your doctor.
  • Try to take your medicine at the same time every day . If possible, take it with a meal. This will help the medicine absorb better.
  • Some tablets are scored in the middle so that you can break them. If the tablet is too big, you can break it in half and drink both pieces at once . Remember, don't drink just one piece.
  • The most important thing is to continue taking this medicine until your doctor tells you to stop. If you stop taking it suddenly, your condition may worsen.
  • If you think you have taken too much of this medicine, immediately call the National Poisons Information Centre at the Colombo National Hospital, or go to the Emergency Treatment Unit (ETU) of the nearest hospital.

If you forget to take a dose, take it as soon as you remember. However, if it is almost time for your next dose (e.g., it is only a few hours away), skip the missed dose and take your next dose at the scheduled time. Never take a double dose.

Other things to be careful about when taking this medicine

  • Drowsiness and dizziness: This medicine may make you feel drowsy or dizzy. Therefore, do not drive or operate machinery until you know how this medicine affects you.
  • Don't get up suddenly: Especially if you are elderly, don't get up from bed or a chair suddenly. Get up slowly. This will reduce the chance of dizziness and falling.
  • Other medications: While you are taking this medicine, do not take over-the-counter medications for coughs, colds, or pain without first consulting your doctor. Some medications can increase your blood pressure.
  • Alcohol: Drinking alcohol can interfere with the effectiveness of this medication, so it is best to stay away from alcohol.
  • Visiting the doctor: Visit the doctor at the scheduled time and check your condition. As the doctor tells you, measure your blood pressure at home as well.

Possible side effects of Metoprolol

Like any medicine, Metoprolol can cause some side effects. Not everyone gets them. But it's important to be aware of them.

Side effect Description
If you have these symptoms, notify your doctor immediately.
Allergic reactions Skin rash, itching, swelling of the face, lips, tongue or throat.
Worsening heart failureDifficulty breathing, swelling of the ankles, feet or hands, sudden weight gain, extreme fatigue.
Low blood pressure Severe dizziness, feeling faint, blurred vision.
Slow heartbeat Dizziness, feeling faint, difficulty breathing, extreme fatigue.
Change in mental status The emergence or increase of feelings of frustration and depression.
Side effects that are usually not serious, but should be reported to the doctor if they persist
Fatigue Excessive fatigue felt even with minor exertion.
Dizziness Dizziness, especially when changing positions.
Other Headache, diarrhea, changes in sexual function.

💡 Take-Home Message

  • Metoprolol is an important 'beta blocker' medication used for high blood pressure and heart disease.
  • It is best to take this medicine at the same time every day, with food.
  • Be sure to inform your doctor about all other medications you are taking and any other medical conditions you have.
  • Never stop taking this medication suddenly without consulting your doctor. It can be dangerous.
  • Be careful when performing tasks that require attention, such as driving, as drowsiness and dizziness may occur.
  • If serious side effects occur (such as difficulty breathing, facial swelling, extreme fatigue), seek medical advice immediately.
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⚠️ Important: Medical articles and information on Nirogi Lanka are strictly for educational and awareness purposes and do not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified physician for any medical concerns.