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What is Atenolol (Tenormin)?


Atenolol (Tenormin) belongs to a class of drugs known as beta-blockers. It is used to treat high blood pressure, fast heartbeat or chest pain. It comes in a tablet or may also be made as a liquid from your pharmacy.

Special Instructions

  • Do not take more medicine or take it more often than your child's doctor tells you.
  • Do not stop taking this medicine without asking your child's doctor.
  • If using the liquid form of the medication, always double check the liquid concentration (milligrams/milliliter), dose (milligram) and volume (milliliters) when receiving a new supply. If any of these are different from your last refill, talk with your child’s doctor or pharmacist.
  • Ask the doctor or pharmacist before giving your child any over-the-counter (OTC) drugs.
  • Make sure your child's doctor knows if your child has asthma or diabetes before giving this medicine.
  • Make sure any doctor or dentist who treats your child knows he / she is using this medicine.
  • Do not use after the expiration date on the bottle / package.
  • If too much medication is taken by accident, please call the Drug and Poison Information Center (DPIC) at 513-636-5111, or , 1-800-222-1222 or call your child's doctor right away.
  • Keep this medication out of the reach of children.

If Your Child Misses a Dose

If a dose is missed, do not double the dose, just take the next dose as scheduled.

Possible Side Effects of Medication

  • Feeling dizzy
  • Feeling tired or weak
  • Wheezing or trouble breathing
  • Slow, fast, or irregular heartbeat
  • Cold hands and feet
  • Sleep problems

Call Your Child's Doctor If:

Call your child's doctor right away if your child has trouble breathing, has a severe headache, skin rash, or passes out.

Last Updated 05/2022

Reviewed By Chris Stang