Metoprolol: 10 Side Effects You Should Know About
The phrase “hidden side effects your doctor isn’t telling you about” is clickbait. Metoprolol is a well-studied beta-blocker, and its potential adverse effects are documented in official prescribing information.
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Ten effects worth knowing about are:
Tiredness or weakness — particularly when beginning treatment.
Dizziness or lightheadedness — often related to lower blood pressure.
Slow heart rate (bradycardia) — metoprolol intentionally slows the heart, but occasionally it can become too slow.
Low blood pressure — which can cause dizziness or fainting.
Shortness of breath or wheezing — especially important in people with asthma or other breathing disorders.
Cold hands and feet — reduced circulation to the extremities can occur.
Depression or mood changes — depression is listed among reported adverse effects.
Diarrhea or other digestive symptoms — diarrhea and dry mouth are reported side effects.
Skin reactions — rash or itching can occur.
Masking some symptoms of low blood sugar — particularly the usual rapid heartbeat that can warn someone they’re becoming hypoglycemic.
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When to seek medical attention
Contact a healthcare professional promptly for fainting, significant breathing difficulty, new swelling of the legs or feet, unexplained rapid weight gain, or a rapid/pounding/irregular heartbeat.
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Most importantly, don’t stop metoprolol suddenly. Abrupt withdrawal can cause serious heart problems, particularly in people taking it for heart disease. Any dose reduction or discontinuation should be planned with the prescriber.
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If you’re experiencing a particular symptom while taking metoprolol, tell me the dose, whether you take metoprolol tartrate or succinate, and the symptom, and I can explain how likely it is to be medication-related.
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