Metoprolol: 10 Side Effects You Should Know
The headline “Your doctor is praying you don’t discover” is clickbait. Healthcare professionals are expected to discuss the benefits and important risks of medications. Metoprolol is a widely used beta-blocker that helps treat high blood pressure, angina, certain abnormal heart rhythms, and heart failure. For many people, its benefits outweigh its risks.
Here are 10 side effects to be aware of:
1. Tiredness or fatigue
Feeling more tired than usual is one of the most common side effects, especially when starting treatment or after a dose increase.
2. Dizziness or lightheadedness
Metoprolol lowers blood pressure and slows the heart rate, which can cause dizziness, particularly when standing up quickly.
3. Slow heart rate (bradycardia)
A slower heart rate is expected, but if it becomes very slow or causes fainting, dizziness, or weakness, seek medical advice promptly.
4. Cold hands and feet
Reduced blood flow to the extremities can make your hands or feet feel cold.
5. Sleep disturbances
Some people experience:
- Trouble sleeping
- Vivid dreams
- Nightmares
6. Digestive problems
Possible symptoms include:
- Nausea
- Diarrhea
- Constipation
- Stomach discomfort
7. Shortness of breath
Although uncommon, metoprolol may worsen breathing symptoms in some people, particularly those with asthma or certain lung conditions.
8. Mood changes
Some people report:
- Low mood
- Feeling less energetic
- Depression (less common)
9. Sexual side effects
Some people may notice reduced libido or erectile dysfunction, although many do not experience these effects.
10. Low blood pressure
Symptoms can include:
- Weakness
- Blurred vision
- Fainting
- Feeling like you might pass out
When to seek medical attention
Contact a healthcare professional promptly if you experience:
- Fainting
- Chest pain
- Severe dizziness
- Very slow heartbeat
- New or worsening shortness of breath
- Swelling of the legs or rapid weight gain (especially if you have heart failure)
Do not stop metoprolol suddenly
Stopping metoprolol abruptly can cause your heart rate and blood pressure to rise quickly, increasing the risk of chest pain, abnormal heart rhythms, or even a heart attack in some people. If it needs to be stopped, your healthcare professional will usually recommend reducing the dose gradually.
If you’re taking metoprolol and have noticed a specific symptom, tell me:
- Your dose (e.g. 25 mg, 50 mg, or 100 mg)
- Why you’re taking it (high blood pressure, heart rhythm, heart failure, etc.)
- What symptoms you’re experiencing
I can help explain whether they are commonly associated with metoprolol and what questions to discuss with your healthcare professional.
