Metoprolol is a beta-blocker used for conditions like high blood pressure, angina, heart rhythm issues, and after heart attacks. Like all medications, it can cause side effects, ranging from common and mild to rare and serious.
Common side effects
These are the ones people most often notice:
- Tiredness or fatigue
- Dizziness or lightheadedness (especially when standing up)
- Slow heart rate (bradycardia)
- Cold hands and feet
- Headache
- Nausea or stomach upset
- Sleep disturbances or vivid dreams
Less common side effects
- Shortness of breath (especially in people with asthma/COPD)
- Mild depression or low mood
- Reduced exercise tolerance
- Weight gain (sometimes with long-term use)
Serious side effects (seek medical help)
- Very slow heartbeat or fainting
- Severe dizziness or confusion
- Worsening shortness of breath or wheezing
- Swelling in legs/ankles with fatigue (possible heart issues)
- Chest pain that worsens instead of improving
Important cautions
- Do not stop metoprolol suddenly — it can trigger rebound high blood pressure or chest pain.
- Alcohol can increase dizziness and low blood pressure.
- It may mask signs of low blood sugar in diabetics (like fast heartbeat).
If you want, tell me your dose or symptoms you’re noticing, and I can explain whether they’re typical or worth checking with a doctor.
