Azithromycin, which is included in the ZITHROLECT 500MG TABLET, is an antibiotic that is a member of the Macrolide drug class. It is used to treat a variety of mild to moderately susceptible infections, such as sinusitis, bronchitis, pneumonia, tonsillitis, and throat and chest infections, that are brought on by bacteria and other microorganisms.In addition, it is indicated for the treatment of sexually transmitted infections such as cervicitis (caused by organisms like Chlamydia trachomatis/Neisseria gonorrhoea) in affected individuals, as well as ear infections and skin and soft tissue infections (such as an abscess/boil).