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

Metoprolol is a beta blocker used to treat conditions such as high blood pressure, angina (chest pain), certain abnormal heart rhythms, heart failure (for some formulations), and to reduce the risk of future heart problems after a heart attack.

Many people take metoprolol without major problems, but side effects can occur.

10 Common Side Effects of Metoprolol

1. Tiredness or fatigue
   • One of the most common side effects, especially when starting the medication or after a dose increase.
2. Dizziness or lightheadedness
   • May occur because metoprolol lowers blood pressure and heart rate.
3. Slow heart rate (bradycardia)
   • A lower heart rate is expected, but if it becomes too slow and causes symptoms, it should be evaluated.
4. Cold hands and feet
   • Reduced blood flow to the extremities can make them feel cold.
5. Low blood pressure
   • This may cause weakness, faintness, or blurred vision.
6. Shortness of breath
   • Less common, but people with asthma or certain lung conditions may notice worsening breathing symptoms.
7. Digestive symptoms
   • Nausea, diarrhea, constipation, or stomach discomfort can occur.
8. Sleep changes
   • Some people report insomnia, vivid dreams, or disturbed sleep.
9. Mood changes
   • Depression or changes in mood have been reported, although they are not common.
10. Reduced exercise tolerance

• You may notice your heart doesn’t speed up as much during physical activity.

When to seek medical attention

Contact a healthcare professional promptly if you experience:

• Fainting or severe dizziness
• Very slow heartbeat with symptoms
• New or worsening chest pain
• Difficulty breathing or wheezing
• Swelling of the face, lips, or tongue (possible allergic reaction)

Important

• Do not stop metoprolol suddenly. Abruptly stopping a beta blocker can increase the risk of chest pain, abnormal heart rhythms, or heart attack in some people. If it needs to be stopped, your healthcare professional will usually recommend reducing the dose gradually.

If you’re taking metoprolol, tell me:

• Your dose (for example, 25 mg, 50 mg, or 100 mg),
• Whether it’s metoprolol tartrate or metoprolol succinate, and
• Any symptoms you’re experiencing,

and I can help explain whether they could be related to the medication.