Azithromycin is an antibiotic medication used to treat a variety of bacterial infections. It belongs to the macrolide class of antibiotics and works by inhibiting bacterial protein synthesis, thereby stopping the growth and spread of bacteria. Azithromycin is commonly prescribed to treat respiratory tract infections such as bronchitis, pneumonia, and sinusitis, as well as skin infections like cellulitis and impetigo. It is also effective against certain sexually transmitted infections (STIs) such as chlamydia and gonorrhea. Additionally, Azithromycin 250 mg can be used to prevent bacterial infections in people with weakened immune systems, such as those living with HIV/AIDS. However, it is important to note that azithromycin is not effective against viral infections such as the common cold or flu. As with all antibiotics, it is essential to take azithromycin exactly as prescribed by a healthcare professional and to complete the full course of treatment, even if symptoms improve before the medication is finished.