Metoprolol is a beta-blocker commonly prescribed for high blood pressure, angina (chest pain), certain abnormal heart rhythms, and heart failure. Many people take it without major problems, but side effects can occur.
10 common side effects of metoprolol
- Tiredness or fatigue
- One of the most commonly reported side effects, especially when starting treatment.
- Dizziness or lightheadedness
- May occur because metoprolol lowers blood pressure and heart rate, particularly when standing up quickly.
- Slow heart rate (bradycardia)
- A slower pulse is expected, but if it becomes too slow it can cause weakness, dizziness, or fainting.
- Cold hands and feet
- Reduced blood flow to the extremities can make them feel cold.
- Low blood pressure
- This may cause faintness, blurred vision, or weakness.
- Shortness of breath
- This is uncommon but can occur, particularly in people with asthma or certain lung conditions.
- Sleep problems
- Some people experience insomnia or vivid dreams.
- Digestive symptoms
- Nausea, diarrhea, constipation, or stomach discomfort can occur.
- Mood changes
- Some people report low mood or decreased energy, although this is not common.
- Sexual side effects
- Decreased libido or erectile dysfunction can occur in some people.
When to seek medical attention
Contact a healthcare professional promptly if you experience:
- Fainting or severe dizziness
- Chest pain
- Very slow heartbeat
- New or worsening shortness of breath
- Swelling of the legs or sudden weight gain
- Signs of an allergic reaction (such as swelling of the face, lips, or throat, or difficulty breathing)
Do not stop metoprolol suddenly. Abruptly stopping it can increase the risk of chest pain, abnormal heart rhythms, or even a heart attack in some people. If it needs to be stopped, it is usually reduced gradually under medical supervision.
If you’re taking metoprolol and have a specific symptom, tell me your dose, how long you’ve been taking it, and the symptom you’re experiencing, and I can help explain whether it could be related.
