10 Important Side Effects of Metoprolol
Metoprolol is a beta-blocker that slows the heart rate and lowers blood pressure. Most people tolerate it well, but side effects can occur.
M
MedlinePlus
+1
Tiredness or weakness — especially when starting treatment.
Dizziness or lightheadedness — often related to lower blood pressure.
Slow heartbeat (bradycardia) — the heart can sometimes become slower than intended.
Low blood pressure — which may cause weakness or fainting.
Shortness of breath or wheezing — particularly important if you have asthma or another breathing disorder.
Cold hands and feet — reduced peripheral circulation can contribute.
Depression or mood changes — depression has been reported with metoprolol.
Sleep disturbances — nightmares and insomnia have been reported.
Digestive problems — diarrhea, nausea, abdominal discomfort, or dry mouth can occur.
Skin reactions — itching or rash are possible.
D
DailyMed
+1
Two things that are especially important
Diabetes: Metoprolol can mask some warning signs of low blood sugar, particularly the normally rapid heartbeat. People with diabetes should know this when monitoring for hypoglycemia.
D
DailyMed
Don’t stop it suddenly. Abruptly discontinuing metoprolol can cause serious heart problems, including worsening angina and potentially a heart attack. Any dose reduction should be discussed with your clinician.
M
MedlinePlus
Seek prompt medical attention for fainting, significant difficulty breathing, new swelling of the legs or feet, unexplained rapid weight gain, or a rapid/pounding/irregular heartbeat.
M
MedlinePlus
Bottom line: Metoprolol’s common effects are usually manageable, but an unusually slow pulse, severe dizziness, breathing difficulty, or worsening heart symptoms shouldn’t be ignored.
M
D
Sources
