Metoprolol: Common Side Effects, Benefits, and Important Warnings
Metoprolol is a prescription medicine in a class called beta-blockers. It works mainly by slowing the heart rate and reducing the effects of stress hormones (like adrenaline) on the heart and blood vessels.
It is commonly prescribed for:
- High blood pressure (hypertension)
- Chest pain related to heart disease (angina)
- Heart rhythm problems
- After a heart attack to reduce strain on the heart
- Certain types of heart failure (with specific formulations and dosing)
10 Common Side Effects of Metoprolol
1. Tiredness or low energy
Because metoprolol slows the heart rate and reduces adrenaline effects, some people feel more fatigued, especially when starting treatment.
2. Dizziness or lightheadedness
This may occur as blood pressure drops, particularly when standing up quickly.
3. Slow heartbeat
A slower heart rate is an intended effect, but a heart rate that becomes unusually low can cause symptoms such as weakness, fainting, or severe dizziness.
4. Cold hands and feet
Reduced circulation to the extremities can make fingers and toes feel colder.
5. Sleep changes or vivid dreams
Some people report:
- Trouble sleeping
- Unusual dreams
- Nighttime awakenings
6. Sexual side effects
Some people experience reduced libido or erectile difficulties, though this does not happen to everyone.
7. Digestive symptoms
Possible effects include:
- Nausea
- Diarrhea
- Constipation
- Stomach discomfort
8. Shortness of breath or reduced exercise tolerance
Some people notice they tire more easily during activity. New or worsening breathing problems should be checked, especially in people with lung conditions.
9. Mood changes
A small number of people report changes such as low mood or feeling less motivated.
