Metoprolol: 10 Common Side Effects to Know
Metoprolol is a beta-blocker commonly prescribed for conditions such as high blood pressure, chest pain (angina), heart rhythm problems, and after certain heart attacks. It works by slowing the heart rate and reducing the workload on the heart.
Many people tolerate metoprolol well, but some may experience side effects.
1. Tiredness or fatigue
- Feeling unusually tired, especially when starting treatment, is one of the most commonly reported effects.
2. Dizziness or lightheadedness
- This may occur because metoprolol can lower blood pressure or slow the heart rate.
3. Slow heartbeat (bradycardia)
- A slower pulse is an expected effect, but an unusually low heart rate with symptoms such as fainting or extreme weakness should be discussed with a healthcare professional.
4. Cold hands and feet
- Reduced circulation to the extremities can cause a sensation of coldness.
5. Sleep changes
- Some people report trouble sleeping, vivid dreams, or changes in sleep patterns.
6. Nausea or stomach discomfort
- Digestive symptoms can occur, especially when first starting the medication.
7. Shortness of breath or reduced exercise tolerance
- Some people may notice they tire more easily during physical activity.
8. Mood changes
- Rarely, people report low mood or changes in emotional well-being.
9. Sexual side effects
- Some individuals may experience changes in sexual function or interest.
10. Weight changes
- Some people notice weight gain or changes in appetite, although this does not happen to everyone.
Important safety notes
- Do not stop metoprolol suddenly unless instructed by your doctor. Stopping abruptly can worsen some heart conditions.
- Seek medical advice promptly for symptoms such as fainting, severe breathing difficulty, chest pain, swelling, or a very slow heartbeat with symptoms.
- If you have diabetes, be aware that beta-blockers can sometimes mask warning signs of low blood sugar, such as a fast heartbeat.
If you take metoprolol and are experiencing a side effect, the best next step depends on your dose, why you take it, how long you’ve been taking it, and your symptoms.
