Azithromycin (Zithromax) is a medicine used to treat infections.

It is also used in patients with cystic fibrosis to help improve lung function and decrease inflammation in the airways.

Azithromycin can be given by mouth as a tablet or liquid and is also available as an intravenous (IV) injection. 

  • Do not stop this medicine until the full amount is taken even if the infection seems to be gone. Stopping the medication too soon may allow the infection to return. Patients with cystic fibrosis should take medicine as their doctor / nurse explained.
  • Tablets and liquid may be taken with or without food.
  • When azithromycin is mixed with other medications, it may not get absorbed, causing it not to work right. Therefore, it is important to avoid giving the medicine within two hours of any antacids (medicine for sour stomach / indigestion).
  • Store at room temperature away from moisture and sunlight.
  • Do not store in the bathroom.
  • Throw away any medicine that is not used. (This medicine in liquid form is stable for only 10 days after it is made.) Do not use after the expiration date on the bottle / package.
  • If too much medication is taken by accident, call the Drug and Poison Information Center (DPIC), 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.

For any medication information related to your child's dosing schedule and / or missed doses, contact the health care provider who prescribed the medication.

  • Upset stomach
  • Diarrhea (loose stools)
  • Nausea
  • Vomiting
  • Headache
  • Dizziness
  • Problems breathing
  • Swelling of the face, mouth, hands or feet
  • Rash

Last Updated 11/2013