Metoprolol is a prescription medication commonly used to treat high blood pressure, certain heart rhythm problems, chest pain (angina), and heart failure. Most people tolerate it well, but like all medications, it can cause side effects.
10 common side effects of metoprolol
- Tiredness or fatigue
- One of the most commonly reported side effects, especially when starting the medication or increasing the dose.
- Dizziness or lightheadedness
- This can occur because metoprolol lowers blood pressure and slows the heart rate.
- Slow heart rate (bradycardia)
- Metoprolol is designed to slow the heart, but in some people it may slow it too much.
- Low blood pressure
- Symptoms can include feeling faint, weak, or dizzy when standing up.
- Cold hands and feet
- Reduced blood flow to the extremities may make them feel cold.
- Shortness of breath
- Although uncommon, metoprolol can worsen breathing symptoms in some people, particularly those with asthma or certain lung conditions.
- Digestive symptoms
- Nausea, diarrhea, constipation, or stomach discomfort may occur.
- Sleep disturbances
- Some people experience insomnia or vivid dreams.
- Mood changes
- Depression or changes in mood have been reported but are less common.
- Reduced exercise tolerance
- Because the medication slows the heart rate, intense physical activity may feel more difficult.
When to seek medical attention
Contact your healthcare provider promptly if you experience:
- Fainting or severe dizziness
- Very slow heartbeat
- Chest pain that is new or worsening
- Difficulty breathing
- Swelling of the face, lips, or tongue (possible allergic reaction)
Important
- Do not stop taking metoprolol suddenly. Stopping it abruptly can cause a rapid rise in heart rate, increased blood pressure, or worsen chest pain. If it needs to be discontinued, your healthcare provider will usually recommend tapering the dose gradually.
If you have concerns about side effects, speak with your healthcare provider or pharmacist. They can help determine whether your symptoms are related to metoprolol and whether any adjustments are needed.
