Metoprolol: 10 Common Side Effects to Know
Metoprolol is a prescription beta-blocker commonly used to treat high blood pressure, angina (chest pain), certain heart rhythm problems, heart failure, and to reduce the risk of future heart problems after a heart attack.
Like all medications, it can cause side effects, although many people take it without significant problems.
Common side effects
- Tiredness or fatigue
- One of the most frequently reported side effects, especially when starting treatment or after a dose increase.
- Dizziness or lightheadedness
- This may occur because metoprolol lowers blood pressure and slows the heart rate.
- Slow heart rate (bradycardia)
- A slower pulse is expected to some degree, but an excessively slow heart rate should be evaluated.
- Cold hands and feet
- Reduced blood flow to the extremities can make them feel cold.
- Low blood pressure
- Symptoms may include dizziness, fainting, or blurred vision.
- Digestive symptoms
- Some people experience nausea, stomach discomfort, diarrhea, or constipation.
- Sleep changes
- Vivid dreams or trouble sleeping may occur in some people.
- Shortness of breath or wheezing
- This is uncommon but can be more likely in people with asthma or certain lung diseases. Contact your healthcare professional promptly if this occurs.
- Depression or mood changes
- Some people report mood changes, although the relationship is not always clear.
- Reduced exercise tolerance
- Because metoprolol slows the heart rate, you may notice that strenuous activity feels different.
Important precautions
- Do not stop metoprolol suddenly. Abruptly stopping it can worsen chest pain, trigger abnormal heart rhythms, or increase the risk of a heart attack. If it needs to be stopped, your healthcare professional will usually recommend gradually reducing the dose.
Contact your healthcare professional if you experience:
- Fainting or severe dizziness
- A very slow heart rate
- New or worsening shortness of breath
- Swelling of the face, lips, tongue, or throat (possible allergic reaction)
- Chest pain that is new or worsening
If you’re taking metoprolol and have concerns about side effects, it’s best to discuss them with the healthcare professional who prescribed it. They can determine whether your symptoms are related to the medication and whether your treatment should be adjusted.
