Azithromycin is use to treat a variety of bacterial illnesses, including chest infections, pneumonitis, chlamydia (STD), and ear, lungs, sinuses, epidermis, larynx, and endocrine system infections. It is also use to treat MAC infection (Mycobacterium avium complex), a form of lung infection that is common in HIV patients Azithromycin can and should only be use in COVID-19 individuals with a doctor’s approval.