Natural Health Research

Naturopathic Medicine
Health Quizzes
Atenolol, Tenormin


Atenolol is a beta-blocker. Atenolol was developed as a replacement for propanolol in the treatment of hypertension.
Propranolol is known to readily cross the blood-brain barrier (BBB) into the brain, causing side-effects such as depression and nightmares; atenolol was specifically developed to be unable to pass through the blood-brain barrier in order to prevent this effect.




acute myocardial infarction, angina, ethanol withdrawal, hypertension, migraine prophylaxis, myocardial infarction prophylaxis,

Side Effects

agranulocytosis, alopecia, AV block, depression, diarrhea, dizziness, dyspnea, exfoliative dermatitis, fatigue, heart failure, hyperglycemia, hypertriglyceridemia, hypoglycemia, hypotension, impotence, nausea/vomiting, pruritus, sinus bradycardia, skin hyperpigmentation, wheezing, 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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