Metoprolol is a beta blocker commonly prescribed to treat high blood pressure, angina, certain heart rhythm problems, heart failure, and to reduce the risk of future heart problems after a heart attack. Most people tolerate it well, but side effects can occur.
Common side effects
- Tiredness or fatigue
- Often improves after your body adjusts to the medication.
- Dizziness or lightheadedness
- More likely when standing up quickly because blood pressure may be lower.
- Slow heart rate (bradycardia)
- Metoprolol is designed to slow the heart, but if it becomes too slow, it can cause symptoms.
- Cold hands and feet
- Reduced blood flow to the extremities can occur.
- Low blood pressure
- May cause faintness, especially when changing position.
- Shortness of breath or wheezing
- This is uncommon but can occur, particularly in people with asthma or certain lung conditions.
- Sleep changes
- Some people report vivid dreams or trouble sleeping.
- Digestive symptoms
- Nausea, diarrhea, or constipation can occur.
- Reduced exercise tolerance
- Because the heart rate doesn’t rise as much during activity.
- Sexual side effects
- Some people experience decreased libido or erectile dysfunction, though many other factors can contribute.
Contact your healthcare professional promptly if you have:
- Fainting or severe dizziness
- A very slow heartbeat with symptoms
- New or worsening shortness of breath
- Swelling of the legs that is getting worse
- Chest pain or severe allergic symptoms
Important
Do not stop metoprolol suddenly. Abruptly stopping it can cause a rebound increase in heart rate and blood pressure and may increase the risk of chest pain or heart attack. If it needs to be stopped, your healthcare professional will usually recommend reducing the dose gradually.
If you’re taking metoprolol and are concerned about a particular symptom, tell me:
- your dose (for example, 25 mg, 50 mg, or 100 mg),
- whether it’s metoprolol tartrate or metoprolol succinate (if you know),
- and what symptom you’re experiencing.
