1. Fatigue or Tiredness
One of the most commonly reported side effects. You may feel less energetic, especially when first starting the medication or after a dose increase.
2. Dizziness
Metoprolol can lower blood pressure and heart rate, which may cause lightheadedness, especially when standing up quickly.
3. Slow Heart Rate (Bradycardia)
Because it slows the heart, some people may notice a lower-than-usual pulse.
4. Cold Hands and Feet
Reduced circulation to the extremities can make hands and feet feel cold.
5. Shortness of Breath
Some people experience breathing difficulties, particularly if they have asthma or other lung conditions.
6. Depression or Low Mood
Mood changes can occur, although not everyone experiences them.
7. Sleep Problems
Insomnia, vivid dreams, or disturbed sleep are occasionally reported.
8. Nausea or Stomach Upset
Digestive symptoms such as nausea, diarrhea, or abdominal discomfort may occur.
9. Reduced Exercise Tolerance
Because the medication limits how much the heart rate increases during activity, exercise may feel more difficult.
10. Sexual Side Effects
Some people report decreased libido or erectile dysfunction.
Important Safety Information
- Do not stop metoprolol suddenly unless instructed by your healthcare provider.
- Abrupt withdrawal can lead to rebound increases in blood pressure and heart rate and may increase the risk of chest pain or heart-related complications.
- Contact your healthcare provider if side effects are severe or persistent.
When to Seek Medical Attention
Seek prompt medical care if you experience:
- Fainting
- Severe dizziness
- Very slow heart rate
- Significant shortness of breath
- Chest pain
- Signs of an allergic reaction
Bottom Line
Metoprolol is an effective and widely used medication, but common side effects can include fatigue, dizziness, a slow heart rate, cold extremities, digestive symptoms, sleep disturbances, and mood changes. If you’re concerned about symptoms while taking metoprolol, discuss them with your healthcare professional rather than stopping the medication on your own.
