Discovering the 10 Most Common Side Effects of Metoprolol: A Helpful Guide for Anyone Taking This Medication

Metoprolol is a beta-blocker commonly prescribed for conditions such as high blood pressure, angina (chest pain), certain heart rhythm problems, and heart failure. It works by slowing the heart rate and reducing the workload on the heart.

Many people take metoprolol without major problems, but like all medicines, it can cause side effects.

10 common side effects of metoprolol

1. Tiredness or fatigue

Feeling unusually tired is one of the most frequently reported effects, especially when first starting treatment. It may improve as the body adjusts.

2. Dizziness or light-headedness

Because metoprolol lowers heart rate and blood pressure, some people may feel dizzy, particularly when standing up quickly.

3. Slow heartbeat (bradycardia)

A slower heart rate is an intended effect, but if it becomes too slow it may cause:

Weakness
Fainting
Severe dizziness
Unusual fatigue

4. Cold hands and feet

Reduced circulation to the extremities can make fingers and toes feel colder than usual.

5. Sleep problems or vivid dreams

Some people report:

Difficulty sleeping
Unusual or vivid dreams
Restlessness

6. Nausea or stomach discomfort

Digestive symptoms may include:

Nausea
Mild stomach upset
Diarrhoea or constipation

7. Shortness of breath during activity

Some people may notice reduced exercise tolerance. People with asthma or other breathing conditions should discuss any worsening symptoms with a healthcare professional.

8. Weight changes

Some people experience weight gain, although this is not universal and can have many causes.

9. Reduced sexual function

Beta-blockers, including metoprolol, may sometimes contribute to reduced libido or erectile difficulties.

10. Mood changes

A small number of people report:

Low mood
Feeling less energetic
Changes in mood

Serious side effects that should not be ignored

Seek medical advice promptly if you experience:

Fainting or severe dizziness
Very slow heartbeat
New or worsening chest pain
Severe shortness of breath, wheezing, or swelling
Signs of an allergic reaction (such as facial swelling or trouble breathing)

Important: Do not stop metoprolol suddenly

Stopping metoprolol abruptly can cause a rapid increase in heart rate and blood pressure and may worsen certain heart conditions. Any dose changes should be discussed with the prescribing clinician.

If you are taking metoprolol and have concerns, useful details include: