Atm Suspension is an antibiotic that contains azithromycin as its active ingredient. This medicine is designed for children's use only. It is used for the treatment of bacterial infections of various parts of the body like ears, throat, lungs, skin, soft tissues, urinary tract, etc. It works by killing the bacteria responsible for the infection. It is very important to complete the course of this antibiotic medicine as prescribed by the doctor. Do not skip a dose or consume it more than that recommended by the doctor. Do not stop taking this medicine on your own as it can lead to antibiotic resistance and recurrence of infection.