Metoprolol: The Good, The Bad, and the Ugly
Metoprolol is a beta-blocker commonly prescribed for high blood pressure, angina, certain abnormal heart rhythms, and some forms of heart failure. It works mainly by slowing the heart rate and reducing the heart’s workload.
10 common or important side effects
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Tiredness or low energy — particularly when starting treatment or increasing the dose.
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Dizziness or lightheadedness — often related to lowered blood pressure or heart rate.
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Slow heartbeat — an expected effect, but an excessively slow pulse can be concerning.
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Cold hands and feet — reduced peripheral circulation can make the extremities feel cold.
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Sleep problems or vivid dreams — some people notice changes in sleep.
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Headache — can occur, especially early in treatment.
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Nausea or diarrhea — gastrointestinal symptoms are possible.
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Sexual difficulties — reduced libido or erectile difficulties can occur in some people.
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Shortness of breath or wheezing — uncommon but important, particularly in people with asthma or other airway disease.
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Depressed mood or weakness — reported by some patients, although these symptoms can have many other causes.
🚨 Know the red flags
Contact a healthcare professional promptly if you experience fainting, severe dizziness, a very slow or irregular heartbeat, new or worsening breathing difficulty, swelling, or signs of an allergic reaction.
If you have diabetes, remember that metoprolol can mask some warning signs of low blood sugar, particularly a rapid heartbeat.
Don’t stop metoprolol suddenly. Abruptly stopping a beta-blocker can cause a dangerous increase in heart rate and blood pressure and may worsen heart-related conditions. Any dose reduction should be planned with your prescriber.
