Metoprolol is a beta-blocker commonly prescribed for high blood pressure, chest pain (angina), certain heart rhythm problems, and heart failure. It helps by slowing the heart rate and reducing the heart’s workload.
Many people take metoprolol safely, but it can cause side effects. Here are 10 possible side effects worth knowing about:
1. Tiredness and low energy
- Feeling more fatigued than usual is one of the more common effects, especially when first starting treatment.
2. Dizziness or lightheadedness
- Because metoprolol can lower blood pressure and slow heart rate, some people feel dizzy, especially when standing up quickly.
3. Slow heartbeat
- A slower pulse is an expected effect, but an unusually slow heartbeat with fainting, chest discomfort, or severe weakness should be checked.
4. Cold hands and feet
- Reduced circulation to the extremities can make fingers and toes feel colder.
5. Sleep changes
- Some people report difficulty sleeping, vivid dreams, or changes in sleep patterns.
6. Shortness of breath or reduced exercise tolerance
- Some people may feel they tire more easily during activity.
- New or worsening breathing problems require medical attention.
7. Digestive problems
Possible symptoms include:
- Nausea
- Diarrhea
- Constipation
- Stomach discomfort
8. Mood changes
- Some people report feeling less energetic or experiencing mood changes, though this is not common.
9. Sexual side effects
- Reduced sexual desire or difficulty with sexual function can occur in some people.
10. Blood sugar warning changes
- In people with diabetes, beta-blockers may mask some warning signs of low blood sugar, such as a racing heartbeat.
Contact a healthcare professional if you notice:
- Fainting or severe dizziness
- A very slow heartbeat with symptoms
- New or worsening chest pain
- Severe breathing difficulty
- Swelling or sudden weight changes
Do not stop metoprolol suddenly unless your healthcare provider advises it. Abruptly stopping a beta-blocker can cause serious problems, especially in people taking it for heart conditions. If you are experiencing a side effect, your doctor may be able to adjust the dose, timing, or treatment plan.
