Metoprolol Side Effects: 10 Common Things to Know
Metoprolol is a beta-blocker commonly prescribed for conditions such as high blood pressure, angina (chest pain), certain heart rhythm problems, and heart failure. It works by slowing the heart rate and reducing the workload on the heart.
Many people take metoprolol without serious problems, but side effects can occur—especially when starting treatment or changing the dose.
1. Tiredness or fatigue
- Feeling more tired than usual is one of the most commonly reported effects.
- Some people adjust after taking the medication for a while.
2. Dizziness or lightheadedness
- This may happen because metoprolol lowers blood pressure and slows the heart rate.
- Standing up slowly can help reduce symptoms.
3. Slow heartbeat
- A lower heart rate is an intended effect, but a heart rate that becomes unusually slow may need medical attention.
4. Cold hands and feet
- Reduced circulation to the skin can make extremities feel cooler.
5. Sleep changes
Some people report:
- Trouble sleeping
- Vivid dreams
- Nighttime waking
6. Gastrointestinal symptoms
Possible symptoms include:
- Nausea
- Diarrhea
- Constipation
- Stomach discomfort
7. Shortness of breath or reduced exercise tolerance
- Some people notice they tire more easily during activity.
- People with asthma or certain lung conditions should discuss breathing changes with a healthcare professional.
8. Mood changes
Less common effects may include:
- Low mood
- Changes in energy
- Feeling less motivated
9. Sexual side effects
Some people may experience changes in sexual function, although this does not happen to everyone.
10. Low blood pressure symptoms
Signs may include:
- Weakness
- Faintness
- Blurred vision
- Feeling like you might pass out
Contact a healthcare professional promptly if you experience:
- Fainting
- Severe dizziness
- Very slow heartbeat
- New or worsening shortness of breath
- Swelling of the legs or sudden weight gain
- Chest pain that is new or worsening
Important: Do not stop metoprolol suddenly
Stopping beta-blockers abruptly can cause serious problems, including worsening chest pain or heart-related complications. Any dose change should be guided by the prescribing clinician.
If you take metoprolol, sharing your dose (for example 25 mg, 50 mg, or 100 mg), why it was prescribed, and the symptom you’re noticing can help identify whether it is a likely side effect or something else.
