Used to treat a variety of bacterial infections, including respiratory tract infections like bronchitis and pneumonia, skin infections, and ear infections. Also effective against certain sexually transmitted infections such as non-gonococcal urethritis. Commonly prescribed when patients are allergic to penicillin, as it belongs to the macrolide class which offers an alternative mechanism of action. Its long half-life allows for once or twice daily dosing, improving patient compliance. Often used in outpatient settings due to its oral bioavailability and favorable side effect profile.