Metoprolol: 10 Common Side Effects to Know
Metoprolol is a beta blocker used for conditions including high blood pressure, angina, heart failure, and certain heart-rhythm problems. Side effects vary between people and between metoprolol formulations.
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Commonly reported effects include:
Tiredness or fatigue — You may feel less energetic, particularly when starting treatment.
Dizziness or lightheadedness — Metoprolol lowers heart rate and blood pressure, which can contribute to dizziness.
Slow heartbeat (bradycardia) — Some slowing of the heart rate is expected, but an excessively slow rate can require medical attention.
Low blood pressure — This may cause weakness, dizziness, or feeling faint.
Shortness of breath — This is listed among reported adverse reactions and should be taken seriously, particularly if it is new or worsening.
Diarrhea — Gastrointestinal effects can occur.
Rash or itching — Skin reactions have been reported.
Depression or low mood — Depression is included among reported adverse reactions.
Cold hands or feet — Reduced peripheral circulation can occur with beta blockers.
Sleep or memory-related symptoms — Headache, nightmares, insomnia, confusion, and short-term memory problems have been reported.
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When to seek medical help
Contact a healthcare professional promptly for fainting, significant swelling or sudden weight gain, difficulty breathing, or a rapid/pounding/irregular heartbeat.
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One particularly important point: don’t abruptly stop metoprolol on your own. Sudden withdrawal can cause serious heart problems, including worsening angina and, in some circumstances, heart attack.
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If you’re experiencing a particular side effect, tell me your metoprolol dose, whether it’s tartrate or succinate, and what you’re experiencing, and I can explain how concerning it may be.
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