Tenormin contraindications and warnings


The following provides information on contraindications to the use of atenolol in general, pregnancy & amp; Breastfeeding and children. Please note that the contraindications may vary depending on the dosage form of a drug (eg tablet, syringe, ointment).

When should Atenolol not be used?

Atenolol must not be used with

  • Hypersensitivity to the active substance and other beta-blockers
  • severe heart failure
  • certain forms of cardiac arrhythmia, impaired cardiac conduction (for example AV block II or III degree, syndrome of the diseased sinus node), with slow heartbeat (bradycardia)
  • pronounced low blood pressure
  • severe arterial circulatory disorders
  • asthma
  • co-administration of MAO inhibitors against depression
  • Acidification of the blood (acidosis) due to a metabolic disorder

Atenolol should only be used after a balance of benefit and risk by the physician at

  • mild cardiac conduction disturbances (first degree AV block)
  • diabetes (diabetes mellitus) with fluctuating blood glucose levels
  • a tumor of the adrenal medulla (pheochromocytoma)
  • Condition after prolonged severe fasting and heavy exercise
  • impaired kidney and liver function
  • Psoriasis
  • severe allergies and patients undergoing treatment for desensitization due to severe allergic disease.

What should you watch out for during pregnancy and lactation?

Use in pregnancy involves risks to the unborn child and should only be done after careful consideration of the benefit and risk by the physician. At least 72 hours before the probable date of birth, the intake must be stopped, otherwise threatens in the newborn cardiac arrhythmia, low blood pressure, hypoglycaemia and respiratory depression. Newborns whose mothers have been treated with atenolol during pregnancy should be monitored carefully.

During lactation, it should be noted that the active substance accumulates in the breast milk. As a result, respiratory depression and cardiac arrhythmia may occur in the infant. Therefore, the mother should abstain before starting treatment.

What should be considered in children?

For use in children and adolescents, the manufacturers make different statements. If in doubt, please consult a doctor or pharmacist and read the package leaflet of the appropriate drug.

Warnings and Precautions

  • The active substance may increase existing renal dysfunction, circulatory disorders, allergies and a tendency to hypoglycaemia.
  • The drug’s ability to react may be limited enough to make it dangerous to drive a car, use machinery, and work without a secure hold.

Sometimes medications release allergic reactions.
If you notice any signs of allergic reaction, tell your doctor or pharmacist immediately.