Metoprolol is a commonly prescribed medication used to treat conditions such as Hypertension, Angina, certain abnormal heart rhythms, and Heart failure. Most people tolerate it well, but side effects can occur.
Here are 10 common side effects:
- Fatigue or tiredness – One of the most frequently reported side effects, especially when starting treatment or after a dose increase.
- Dizziness or lightheadedness – Often related to a drop in blood pressure, particularly when standing up quickly.
- Slow heart rate (bradycardia) – Metoprolol lowers the heart rate as part of its intended effect, but it can sometimes become too slow.
- Cold hands and feet – Reduced blood flow to the extremities can cause this symptom.
- Low blood pressure – This may cause weakness, faintness, or blurred vision.
- Shortness of breath or reduced exercise tolerance – More likely in people with asthma or other lung diseases, although metoprolol is generally more selective than some other beta blockers.
- Digestive symptoms – Such as nausea, diarrhea, constipation, or stomach discomfort.
- Sleep disturbances – Some people report insomnia or vivid dreams.
- Depressed mood or mood changes – These have been reported but are not common, and the relationship isn’t always clear.
- Sexual dysfunction – Some people experience decreased libido or difficulty with erections.
Side effects that need prompt medical attention
Contact a healthcare professional promptly if you develop:
- Severe dizziness or fainting
- Very slow heartbeat
- Difficulty breathing or wheezing
- Swelling of the face, lips, tongue, or throat (possible allergic reaction)
- Chest pain that is new or worsening
Don’t stop metoprolol suddenly
If you’ve been taking metoprolol regularly, do not stop it abruptly unless instructed by your healthcare provider. Stopping suddenly can worsen conditions such as angina or increase the risk of certain heart problems. Your prescriber will usually recommend tapering the dose if it needs to be discontinued.
If you’re taking metoprolol and are experiencing a specific side effect, tell me:
- your dose (for example, 25 mg, 50 mg, or 100 mg),
- whether you’re taking the immediate-release or extended-release form,
- and what symptoms you’re having.
I can help explain whether they’re commonly associated with metoprolol and when they warrant medical evaluation.
