Each tablet contains: Azithromycin (as dihydrate) 500 mg.
Azithromycin is an azalide antibiotic, a subclass of macrolide antibiotics. Azalides are distinguished from other macrolides such as erythromycin, by the addition of nitrogen at position 9a of the lactone ring. Azithromycin has a broader spectrum of activity than that of erythromycin or clarithromycin.