Metoprolol is a beta-blocker commonly prescribed for conditions such as high blood pressure, chest pain (angina), certain heart rhythm problems, and heart failure. Like all medicines, it can cause side effects, and some may be easy to overlook.
Possible side effects include:
- Tiredness or low energy — common, especially when starting treatment or after a dose increase.
- Dizziness or lightheadedness — can happen if blood pressure or heart rate becomes too low.
- Slow heartbeat (bradycardia) — some people may notice unusual fatigue, weakness, or feeling faint.
- Cold hands and feet — due to reduced circulation in the extremities.
- Sleep changes — including vivid dreams or sleep disturbances in some people.
- Mood changes — some people report feeling more down or less motivated, though this is not common for everyone.
- Shortness of breath or reduced exercise tolerance — can occur, especially if the dose is not well matched to the person.
- Sexual side effects — such as reduced libido or erectile difficulties in some people.
Do not stop metoprolol suddenly unless your healthcare professional tells you to. Abruptly stopping it can cause a dangerous increase in heart rate, blood pressure, chest pain, or other heart problems.
Contact a healthcare professional if you experience:
- Fainting or severe dizziness
- Very slow heartbeat
- New or worsening shortness of breath
- Chest pain
- Swelling of the legs or sudden weight gain
If you tell me your metoprolol dose (for example 25 mg, 50 mg, 100 mg), whether it is tartrate or succinate, and why you take it, I can help you understand which side effects are most relevant.
