azithromycin, Zithromax, Zmax (cont.)

Pharmacy Author:
Medical and Pharmacy Editor:

DOSING: Azithromycin (except Zmax) can be taken with or without food, but food reduces stomach upset. Zmax should be taken on an empty stomach 1 hour before or 2 hours after a meal since food reduces its absorption. The adult azithromycin dose is 500-2000 mg in multiple or single doses. For most infections, azithromycin is taken once daily for a relatively short course of treatment (usually five days). The first dose is often a "double dose," twice as much as the remainder of the doses given. For acute bacterial sinusitis, azithromycin way be taken once daily for three days. Zmax usually is given as a single 2 gm dose.

DRUG INTERACTIONS: Azithromycin (except Zmax) should not be taken at the same time as aluminum- or magnesium-based antacids, such as Mylanta or Maalox, because antacids will bind the azithromycin and prevent it from being absorbed from the intestine.

PREGNANCY: There are no adequate studies of azithromycin in pregnant women. Azithromycin should only be used during pregnancy if it is clearly necessary.

NURSING MOTHERS: It is not known if azithromycin is secreted in breast milk.

Medically reviewed by Eni Williams, PharmD

Reference: FDA Prescribing Information


Medically Reviewed by a Doctor on 12/3/2014


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