Azithromycin is a macrolide antibiotic that inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit. It offers a broad spectrum of activity, a long tissue half-life enabling once-daily dosing, and shorter treatment courses compared with conventional antibiotics. Indicated for respiratory tract infections including community-acquired pneumonia, acute bacterial sinusitis, and pharyngitis/tonsillitis; otitis media; uncomplicated skin and soft tissue infections; and sexually transmitted infections including uncomplicated urethritis and cervicitis caused by Chlamydia trachomatis.