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Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.





This medication is used to prevent mycobacterial (MAC) infections.

How To Use

The usual dosage for this medication is two tablets once a week. It may be taken with or without food. Avoid taking antacids with this since the absorption of the drug can be affected. Wait at least 2 hours after taking this before taking an antacid. Take the medication at the same time of the day on each day of treatment. Continue to take this medication even if symptoms disappear after a few days. Stopping the medication may allow bacteria to grow and may result in a relapse of the infection.

Side Effects

This medication may cause stomach upset, loose stools, loss of appetite, nausea, vomiting, stomach cramps, or vaginal irritation. If these symptoms persist or become severe, inform your doctor. Notify your doctor if you develop symptoms of jaundice such as: dark urine, clay-colored stools, yellowing of eyes or skin. In the unlikely event you have an allergic reaction to this drug, seek medical attention immediately. Symptoms of an allergic reaction include: rash, itching, swelling, dizziness, trouble breathing. If you develop diarrhea while taking this medication, notify your doctor. Do not take any nonprescription medications to treat diarrhea without first consulting your doctor. Use of this medication for prolonged or repeated periods may result in a secondary infection (e.g., oral, bladder or vaginal yeast infection). If you notice other effects not listed above, contact your doctor or pharmacist.


Tell your doctor your medical history, especially: other illnesses, liver disease, yellowing of the skin or eyes (jaundice), history of colitis or stomach problems, kidney disease, any allergies (especially allergies to drugs). Tell your doctor if you are pregnant before taking this medication. It is not known if azithromycin appears in breast milk. Consult with your doctor before breast-feeding.

Drug Interactions

This drug is not recommended for use with: aluminum- and magnesium-containing antacids. Tell your doctor of all over-the-counter and prescription medications you are taking including: theophylline, warfarin, astemizole, terfenadine, nelfinavir, digoxin, triazolam, certain cholesterol-lowering drugs (e.g., lovastatin), live vaccines. This drug may interfere with the effectiveness of birth control pills. Discuss using other methods of birth control with your doctor. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include nausea, vomiting, and diarrhea.


This medication has been prescribed for your current condition only. Do not use it later for another infection or give it to someone else. A different medication may be necessary.

Missed Dose

If you miss a dose, take it as soon as remembered; do not take if it is almost time for the next dose. Instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the doses.


Store at room temperature away from sunlight and moisture.