Metoprolol is a commonly prescribed beta-blocker used for conditions such as high blood pressure, angina (chest pain), certain heart rhythm problems, and heart failure. Like all medicines, it can cause side effects, though many people take it without serious problems.
10 possible metoprolol side effects to know about:
- Tiredness or fatigue – one of the more common effects, especially when starting treatment.
- Dizziness or lightheadedness – may occur due to lower blood pressure or a slower heart rate.
- Slow heartbeat (bradycardia) – metoprolol intentionally lowers heart rate, but an excessively slow pulse can be a concern.
- Low blood pressure – may cause weakness, faintness, or dizziness.
- Cold hands and feet – reduced circulation to the extremities can occur.
- Sleep changes – some people report vivid dreams or sleep disturbances.
- Mood changes – uncommon, but some people report low mood or changes in energy.
- Shortness of breath or wheezing – more concerning in people with asthma or certain lung conditions.
- Sexual side effects – some people experience reduced libido or erectile difficulties.
- Digestive symptoms – nausea, diarrhea, or stomach discomfort can occur.
Contact a healthcare professional promptly if you experience:
- Fainting or severe dizziness
- New or worsening shortness of breath
- Chest pain
- Swelling of the legs or sudden weight gain
- A very slow or irregular heartbeat
Important: Do not stop metoprolol suddenly unless instructed by a healthcare professional. Abruptly stopping some beta-blockers can worsen chest pain or increase the risk of serious heart problems.
If you take metoprolol and want to know whether a symptom you’re having could be related, tell me your dose, how long you’ve been taking it, and the symptom.
