Metoprolol is a beta blocker used to treat conditions such as high blood pressure, angina, certain abnormal heart rhythms, and heart failure. Many people take it without major problems, but side effects can occur.
10 common side effects
- Fatigue or tiredness
- One of the most common side effects, especially when starting treatment.
- Dizziness or lightheadedness
- Can occur because metoprolol lowers blood pressure and heart rate.
- Slow heart rate (bradycardia)
- A slower pulse is expected, but if it becomes too slow it may cause symptoms.
- Cold hands and feet
- Reduced blood flow to the extremities can occur.
- Low blood pressure
- May cause faintness, especially when standing up quickly.
- Shortness of breath or wheezing
- More likely in people with asthma or other lung conditions.
- Sleep disturbances
- Some people report insomnia or vivid dreams.
- Digestive problems
- Nausea, diarrhea, constipation, or stomach discomfort.
- Reduced exercise tolerance
- Your heart rate may not increase as much during physical activity.
- Sexual side effects
- Some people experience decreased libido or erectile dysfunction.
Seek medical attention promptly if you develop:
- Fainting or severe dizziness
- A very slow heartbeat with symptoms
- Chest pain
- New or worsening shortness of breath
- Swelling that is getting worse
- Signs of an allergic reaction, such as swelling of the face or difficulty breathing
Important
Do not stop metoprolol suddenly. Abruptly discontinuing it can cause a rebound increase in heart rate and blood pressure and may increase the risk of chest pain or a heart attack. If it needs to be stopped, it is usually tapered under medical supervision.
If you’re taking metoprolol, I can also explain:
- which side effects are common and usually temporary,
- which are rare but serious,
- and when you should contact your healthcare provider.
