Do not take this medicine with any of the following medications:

-cisapride
-dronedarone
-pimozide
-thioridazine

This medicine may also interact with the following medications:

-antacids that contain aluminum or magnesium
-birth control pills
-colchicine
-cyclosporine
-digoxin
-ergot alkaloids like dihydroergotamine, ergotamine
-nelfinavir
-other medicines that prolong the QT interval (an abnormal heart rhythm)
-phenytoin
-warfarin

They need to know if you have any of these conditions:

-history of blood diseases, like leukemia
-history of irregular heartbeat
-kidney disease
-liver disease
-myasthenia gravis
-an unusual or allergic reaction to azithromycin, erythromycin, other macrolide antibiotics, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Tell your doctor or healthcare provider if your symptoms do not start to get better or if they get worse.

This medicine may cause serious skin reactions. They can happen weeks to months after starting the medicine. Contact your healthcare provider right away if you notice fevers or flu-like symptoms with a rash. The rash may be red or purple and then turn into blisters or peeling of the skin. Or, you might notice a red rash with swelling of the face, lips or lymph nodes in your neck or under your arms.

Do not treat diarrhea with over the counter products. Contact your doctor if you have diarrhea that lasts more than 2 days or if it is severe and watery.

This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.