Here are 10 common side effects people may experience:
1. Fatigue or unusual tiredness
Very common, especially when starting or increasing the dose. The heart is working more “efficiently,” which can feel like low energy.
2. Dizziness or lightheadedness
Often due to lowered blood pressure or slower heart rate.
3. Slow heart rate (bradycardia)
Metoprolol intentionally reduces heart rate, but sometimes it can go too low.
4. Cold hands and feet
Reduced blood flow to extremities is a typical beta-blocker effect.
5. Shortness of breath (in some people)
More likely in people with asthma or other lung sensitivity.
6. Sleep disturbances or vivid dreams
Some people report unusual dreams or difficulty sleeping.
7. Nausea or stomach discomfort
Usually mild and temporary.
8. Depression or low mood (less common but important)
Mood changes can occur in some individuals.
9. Reduced exercise tolerance
You may notice you can’t push as hard during physical activity because your heart rate doesn’t rise as much.
10. Sexual dysfunction
Including reduced libido or difficulty with performance in some people.
When to seek medical advice
Contact a healthcare provider urgently if you notice:
- Very slow pulse with fainting or near-fainting
- Severe shortness of breath or wheezing
- Swelling of feet/legs with worsening fatigue
- Chest pain that returns or worsens
If you want, tell me your dose or symptoms, and I can help you understand whether what you’re feeling is expected or worth checking with a doctor.
