đź’Š 10 Important Side Effects of Metoprolol
Metoprolol is a beta blocker commonly used for high blood pressure, angina, certain abnormal heart rhythms, and some heart conditions. Most people tolerate it well, but side effects can occur. (nhs.uk)
- Tiredness or weakness — especially when first starting treatment.
- Dizziness or lightheadedness — particularly when standing up quickly.
- Slow heartbeat — metoprolol deliberately lowers heart rate, but an excessively slow pulse can be problematic.
- Low blood pressure — may cause dizziness or fainting.
- Cold hands and feet — reduced circulation to the extremities can contribute.
- Headache — usually mild and may improve as your body adjusts.
- Nausea or stomach discomfort — gastrointestinal symptoms can occur.
- Diarrhea — reported in some people taking metoprolol.
- Sleep disturbances or unusual dreams — some people experience changes in sleep.
- Shortness of breath or wheezing — uncommon, but particularly important if you have asthma or another airway condition. (nhs.uk)
⚠️ Don’t stop it suddenly
Stopping metoprolol abruptly can cause your heart rate and blood pressure to rise and may worsen angina or other heart problems. If you’re having side effects, talk to your prescriber before changing the dose or stopping it. (nhs.uk)
Metoprolol can also make some symptoms of low blood sugar harder to recognize, particularly the usual rapid heartbeat, in people taking insulin or certain diabetes medications. (nhs.uk)
🚨 Seek urgent medical attention
Get urgent help if you develop fainting, severe difficulty breathing/wheezing, new or worsening chest pain, or signs of a serious allergic reaction.
Bottom line: Fatigue, dizziness, slow heart rate, low blood pressure, and cold extremities are among the more recognizable effects. If you recently started metoprolol and are experiencing a new symptom, don’t assume it’s harmless—your doctor or pharmacist can determine whether it could be medication-related.
