Metoprolol: The Good, The Bad, and the UGLY
Metoprolol is a beta blocker commonly used for high blood pressure, angina, certain abnormal heart rhythms, and after a heart attack. It slows the heart rate and reduces how hard the heart has to work.
10 common side effects
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Tiredness or fatigue — probably the most recognizable effect. You may feel unusually sluggish, especially when starting treatment.
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Dizziness or lightheadedness — often related to lower blood pressure or a slower heart rate.
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Slow heartbeat — metoprolol intentionally lowers heart rate, but an excessively slow pulse can be a problem.
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Cold hands and feet — reduced peripheral circulation can make your extremities feel chilly.
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Low blood pressure — may cause weakness, dizziness, or feeling faint when standing.
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Sleep problems or vivid dreams — some people report insomnia, unusual dreams, or disturbed sleep.
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Depressed mood — mood changes can occur, although they’re not experienced by everyone.
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Shortness of breath — metoprolol can sometimes worsen breathing symptoms, particularly in people with asthma or certain other lung conditions.
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Nausea or stomach upset — gastrointestinal symptoms can occur, especially early in treatment.
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Sexual difficulties — decreased libido or erectile difficulties are reported by some people taking beta blockers.
The “UGLY”: when to take it seriously
Seek urgent medical attention for fainting, severe difficulty breathing, significant chest pain, severe weakness, or symptoms suggesting a dangerously slow heartbeat.
One particularly important rule: don’t suddenly stop metoprolol on your own. Abrupt withdrawal can cause a rebound increase in heart rate and blood pressure and may worsen angina or other cardiac problems. Dose changes should generally be made with the prescriber.
Also, side effects aren’t necessarily a reason to discontinue treatment. If you’re experiencing fatigue, dizziness, a low pulse, or sexual side effects, a clinician can determine whether metoprolol is responsible and whether the dose or medication needs adjustment.
If you tell me your metoprolol dose, whether it’s tartrate or succinate, and what side effect you’re experiencing, I can explain what is typical versus what warrants contacting your doctor.
