Atenolol Side Effects

Generic Name: Tenormin

Brand Name: Atenolol (Benzeneacetamide)

Some side effects of atenolol may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Consumer need to know

Routes of administration: Oral or IV

Like using any medication, side effects are probable with atenolol (Tenormin®)

Get urgent health care help, in case you have got any of these signs of an allergic kind of reaction while using atenolol: rash; hives; severe dizziness; trouble breathing; itching, inflammation or swelling of your face, lips, tongue, or throat.

Get in touch with your personal medical doctor as soon as you experience any of these significant side effects:

Atenolol causes fewer side effects on central nervous system (like depression, nightmares).

Side effects include:

  • indigestion, constipation
  • fatigue, weakness or lack of energy
  • insomnia, nightmares
  • dizziness or faintness (especially cases of orthostatic hypotension)
  • depression
  • cold hands and feet
  • rhinitis
  • dry mouth
  • confusion
  • edema
  • impotence
  • a boost in liver digestive enzymes
  • allergic responses
  • head ache
  • slow-moving or unequal heartbeats
  • light-headed sensation, fainting
  • experiencing short of breathing, actually with moderate exertio
  • inflammation of your ankles as well as legs
  • fever, reduction of appetite, darkish urine, jaundice

Less significant side effects of atenolol may consist of:

  • reduced sex drive, impotence problems, or trouble getting an orgasm
  • sleeping issues (insomnia)
  • exhausted feeling
  • anxiousness, stress
  • fever (occasionally)
Be carefull when taking Simvastatin


  1. low pulse rate (less than 50 bpm)
  2. inadequate circulation of blood (cardiogenic shock)
  3. hypotension (low blood pressure - less than 90/60 mm Hg with dizziness, vertigo etc.)
  4. atrioventricular blockage of second and third degree (a particular form of arrhythmia)
  5. asthma (may cause broncho-constriction)
  6. asthma (may cause broncho-constriction)
  7. a particular form of arrhythmia (sick sinus syndrome)
  8. hypersensitivity and/or allergy to atenolol
  9. pheochromocytoma (a rare type of tumor of the adrenal glands)
  10. severe disorders in peripheral arterial circulation
  11. angina of the Prinzmetal type (vasospastic angina)

Patients with chronic bronchial asthma should not be taking Atenolol, and during pregnancy, as Atenolol may retard fetal growth and possibly cause other abnormalities.