generic for Z-pak

What is Azithromycin?

Common Brand(s): Zithromax

Azithromycin is used to treat a wide variety of bacterial infections. It is a macrolide-type antibiotic. It works by stopping the growth of bacteria.

This medication will not work for viral infections (such as common cold, flu). Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness.


  • enteric campylobacteriosis
  • traveler's diarrhea
  • prevention of traveler's diarrhea
  • disseminated mycobacterium avium complex infection
  • prevention of Mycobacterium avium complex disease
  • pertussis
  • pharyngitis due to Streptococcus pyogenes
  • tonsillitis due to Streptococcus pyogenes
  • Lyme disease
  • acute gonococcal urethritis
  • acute gonococcal cervicitis
  • gonococcal pharyngitis
  • rectal gonorrhea
  • chancroid
  • Chlamydia trachomatis urethritis
  • chlamydia cervicitis
  • Haemophilus influenzae acute otitis media
  • Moraxella catarrhalis acute otitis media
  • pneumococcal acute otitis media
  • acute bacterial otitis media
  • prevention of bacterial endocarditis
  • acute Streptococcus pneumoniae bacterial sinusitis
  • acute Haemophilus influenzae bacterial sinusitis
  • acute Moraxella catarrhalis bacterial sinusitis
  • pneumococcal pneumonia
  • Haemophilus influenzae pneumonia
  • Legionella pneumophila pneumonia
  • Moraxella catarrhalis pneumonia
  • mycoplasmal pneumonia
  • chlamydial pneumonia
  • chronic bronchitis with bacterial exacerbation
  • Chlamydia trachomatis pelvic inflammatory disease
  • pelvic inflammatory disease with Neisseria gonorrhea
  • Mycoplasma hominis pelvic inflammatory disease
  • Staphylococcus aureus skin and skin structure infection
  • skin and skin structure Streptococcus pyogenes infection
  • skin and skin structure Streptococcus agalactiae infection
  • acute exacerbation of obstructive chronic bronchitis due to H. flu
  • acute exacerbation of obstructive chronic bronchitis by M. catarrhalis
  • acute exacerbation of obstructive chronic bronchitis by Streptococcus pneumoniae
  • acquired immunodeficiency syndrome with toxoplasmosis

Usage Instructions

Read the Patient Information Leaflet if available from your pharmacist before you start taking azithromycin and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take this medication by mouth as directed by your doctor, usually once daily with or without food. You may take this medication with food if stomach upset occurs. The dosage is based on your medical condition and response to treatment. For children, the dose is also based on weight.

Shake the suspension well before using. Carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose. If your child vomits the 1-day treatment dose within 30 minutes, call your doctor to see if you need to repeat the dose.

For the best effect, take this antibiotic at evenly spaced times. To help you remember, take this medication at the same time(s) every day.

Continue to take this medication until the full prescribed amount is finished, even if symptoms disappear after a few days. Stopping the medication too early may allow bacteria to continue to grow, which may result in a return of the infection.

Antacids containing aluminum or magnesium may decrease the absorption of azithromycin if taken at the same time. If you take an antacid that contains aluminum or magnesium, wait at least 2 hours before or after taking azithromycin.

Tell your doctor if your condition persists or worsens.


Store at room temperature away from light and moisture. Do not store in the bathroom. Discard after 10 days. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.