10 Important Side Effects of Metoprolol to Know
Metoprolol is a beta blocker commonly used for high blood pressure, certain heart conditions, and abnormal heart rhythms. Many people tolerate it well, but side effects can occur.
Common or important side effects
- Tiredness or fatigue — especially when starting treatment or after a dose increase.
- Dizziness or light-headedness — particularly when standing up quickly.
- Slow heartbeat (bradycardia) — metoprolol intentionally lowers heart rate, but an excessively slow pulse can be problematic.
- Low blood pressure — may cause weakness, dizziness, or fainting.
- Cold hands and feet — reduced circulation to the extremities can make them feel unusually cold.
- Sleep problems or vivid dreams — some people notice changes in sleep while taking beta blockers.
- Depressed mood or low energy — mood changes can occur, although they’re not experienced by everyone.
- Shortness of breath or wheezing — beta blockers can sometimes worsen breathing problems, particularly in susceptible people.
- Sexual difficulties — reduced libido or erectile difficulties can occur in some people.
- Masking symptoms of low blood sugar — particularly important for people with diabetes, because metoprolol can make warning signs such as a rapid heartbeat less noticeable.
🚨 When to seek medical help
Contact a healthcare professional promptly for fainting, a very slow heartbeat, worsening shortness of breath, swelling, or significant dizziness.
Don’t suddenly stop metoprolol without medical advice. Abrupt withdrawal can cause a dangerous increase in heart rate or blood pressure and may worsen some heart conditions.
Side effects also depend on whether you’re taking metoprolol tartrate or metoprolol succinate, the dose, and why it was prescribed. If you tell me which one you’re taking and the dose, I can explain the side effects that are most relevant to you.
