
Azithromycin dosage
ADULTS
Pneumonia, Chronic Obstructive Pulmonary Disease, Tonsillitis, Strep Throat, and Skin Infections
The usual dose of Azithromycin is 500 milligrams in a single dose the first day. This is followed by 250 milligrams once
daily for the next 4 days. Alternatively, patients with chronic obstructive pulmonary disease may be prescribed 500 milligrams a day for 3 days.
Sinus Infection
The usual dose of Azithromycin is 500 milligrams once a day for 3 days.
Genital Ulcer Disease
The usual dose is a single gram (1,000 milligrams) one time only.
Sexually Transmitted Diseases
The usual dose is a single 2gram (2,000 milligrams) dose.
CHILDREN
Middle Ear Infection
For children aged 6 months and up, treatment may be given three ways. One option is a single dose of 30 milligrams per 2.2 pounds of body weight. Another option is a dose of 10 milligrams per 2.2 pounds given each day for 3 days. Azithromycin can also be given over a period of 5 days, starting with a dose of 10 milligrams per 2.2 pounds on the first day and continuing with daily doses of 5 milligrams per 2.2 pounds for the next 4 days.
Sinus Infection
For children aged 6 months and up, the usual dose is 10 milligrams of Azithromycin suspension per 2.2 pounds of body weight given once daily for 3 days.
Pneumonia
For children aged 6 months and up, the usual dose is 10 milligrams of Azithromycin suspension per 2.2 pounds of body weight in a single dose the first day, followed by 5 milligrams per 2.2 pounds for the next 4 days.
Strep Throat and Tonsillitis
For children aged 2 years and up, the usual dose is 12 milligrams per 2.2 pounds of body weight once daily for 5 days.
Azithromycin should be taken at least one hour before or two hours after meals since Azithromycin may bind to food and not be absorbed from the intestine. 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.

