Metoprolol: 10 Common Side Effects to
Know
Metoprolol is a beta-blocker commonly prescribed for conditions such as high blood pressure, angina, certain heart-rhythm problems, and heart failure.
Not everyone experiences side effects, and many are mild or improve as your body adjusts.
10 possible side effects
- Tiredness or fatigue — Metoprolol slows the heart rate and can make some people feel less energetic.
- Dizziness or lightheadedness — Especially when standing up quickly, particularly when first starting treatment.
- Slow heartbeat — A lower heart rate is an expected effect, but an unusually slow rate can sometimes be problematic.
- Low blood pressure — This may cause weakness, dizziness, or faintness.
- Cold hands and feet — Reduced blood flow to the extremities can make them feel unusually cold.
- Headache — Some people experience headaches, particularly early in treatment.
- Nausea or stomach discomfort — Digestive symptoms can occur and may improve with continued use.
- Sleep problems or unusual dreams — Some people report insomnia, disturbed sleep, or vivid dreams.
- Shortness of breath or reduced exercise tolerance — This can occur because the medication limits how quickly the heart rate rises during exertion. However, new or worsening breathlessness should be medically assessed, especially in someone with heart disease.
- Depressed mood — Mood changes have been reported, blood pressure and may worsen angina or other heart problems. If you want to stop or change the dose, your although the relationship between beta-blockers and depression is complex.
When should you get help?
Seek urgent medical attention for fainting, severe difficulty breathing, chest pain, severe swelling, or a very slow/irregular heartbeat.
And importantly, don’t suddenly stop metoprolol on your own. Abrupt withdrawal can cause a dangerous increase in heart rate or blood pressure and may worsen angina or other heart problems. If you want to stop or change the dose, your prescriber can advise you on a safe approach.
If you’d like, I can also give you a simple list of metoprolol side effects that are normal vs. those that require a doctor immediately.
