Natural Health Research

Naturopathic Medicine
Health Quizzes
Metoprolol, Lopressor, Toprol XL, Toprol, Seleken, Selokeen


Metoprolol is a selective beta1 receptor blocker used in treatment of cardiovascular disease.


beta-blocker, beta-1 adrenergic antagonist


acute myocardial infarction, angina, hypertension, myocardial infarction prophylaxis, tremor,

Side Effects

agranulocytosis, alopecia, AV block, bronchospasm, depression, diarrhea, dizziness, dyspnea, elevated hepatic enzymes, exfoliative dermatitis, fatigue, heart failure, hyperglycemia, hypertriglyceridemia, hypoglycemia, hypotension, impotence, musculoskeletal pain, nausea/vomiting, pruritus, sinus bradycardia, skin hyperpigmentation, xerosis,

Drug-Vitamin-Herb Interactions

Negative interactions:

Calcium may form unabsorbable complex with atenolol. Take at a different time of day.

Coleus forskohlii
Coleus forskohlii relaxes blood vessels. Combining Coleus with beta-blockers may have unpredicatable effects on blood pressure.

Positive interactions:

Beta-blockers reduce HDL. Chromium can offset the adverse effect.

Coenzyme Q10
Beta-blockers (especially propanolol) inhibit the actions of enzymes that contain CoQ10.




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