10 Common Side Effects of Metoprolol: A Helpful Guide
Metoprolol is a beta-blocker used for conditions including high blood pressure, angina, certain heart-rhythm problems, and heart failure. Many people take it without major problems, but side effects can occur.
10 possible side effects
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Tiredness or fatigue — especially when starting treatment or increasing the dose.
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Dizziness or lightheadedness — often related to lower blood pressure.
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Slow heart rate — slowing the heart is an intended effect, but a rate that’s too low can cause symptoms.
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Low blood pressure — may cause weakness, dizziness, or fainting.
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Cold hands or feet — some people notice cooler extremities.
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Shortness of breath — uncommon, but potentially important, particularly in people with asthma or other breathing disorders.
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Nausea or stomach discomfort — generally mild when it occurs.
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Sleep problems or unusual dreams — some people report changes in sleep.
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Depressed mood or reduced energy — reported by some users, although not every case is necessarily caused by the medicine.
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Sexual difficulties — decreased libido or erectile difficulties can occur in some people.
When to contact a healthcare professional
Seek medical advice if side effects are persistent, troublesome, or getting worse. Prompt medical attention is appropriate for fainting, severe dizziness, significant breathing difficulty, chest pain, or a very slow or irregular heartbeat.
Don’t stop metoprolol suddenly
Even if you suspect it’s causing side effects, don’t abruptly discontinue it without medical guidance. Sudden withdrawal can cause a rapid increase in heart rate and blood pressure and may worsen angina or other heart problems.
If you’re taking metoprolol and experiencing a particular symptom, tell your doctor or pharmacist. They can determine whether the symptom is likely medication-related and whether the dose or treatment needs adjustment.
