Used to treat a wide range of bacterial infections, including respiratory tract infections, skin infections, ear infections, and sexually transmitted infections like chlamydia. It is effective against both gram-positive and some gram-negative bacteria. Commonly prescribed for community-acquired pneumonia, bronchitis, and sinusitis due to its long half-life and once-daily dosing. Also used in prophylaxis for certain infections in immunocompromised patients. Well-tolerated with fewer gastrointestinal side effects compared to other macrolides, making it suitable for patients who cannot tolerate erythromycin. Available in oral and intravenous forms, allowing flexible treatment options.