Azithromycin 250 mg is a widely used antibiotic that belongs to the macrolide group of medicines. It is prescribed to treat a variety of bacterial infections in humans by stopping the growth of bacteria and helping the body’s immune system fight infection. It is not effective against viral illnesses such as the common cold or flu.  Azithromycin 250 mg is commonly used to treat respiratory tract infections, including bronchitis, pneumonia, sinusitis, and throat infections like tonsillitis and pharyngitis. Doctors also prescribe it for ear infections, especially in children and adults who are sensitive to penicillin. In addition, it is effective in treating skin and soft tissue infections caused by susceptible bacteria. This medicine is also used for certain sexually transmitted infections (STIs), such as chlamydia, and may be prescribed as part of combination therapy for more complex infections. Azithromycin is often preferred because of its once-daily dosing and shorter treatment duration compared to many other antibiotics. Azithromycin 250 mg should always be taken exactly as prescribed by a doctor. Completing the full course is important, even if symptoms improve early, to prevent antibiotic resistance and ensure complete recovery.