AZITHRO 500 mg tablets, containing the active ingredient azithromycin, are an antibiotic primarily used to treat a wide variety of bacterial infections. They are not effective against viral infections like the common cold or flu. The main indications include: . Respiratory Tract Infections: This covers conditions such as pneumonia, bronchitis, tonsillitis, pharyngitis (sore throat), and sinusitis. . Skin and Soft Tissue Infections: Examples include conditions like acne, cellulitis, and abscesses (boils). . Ear Infections: The medicine is used to treat middle ear infections (otitis media) in both adults and children over a certain weight limit. . Sexually Transmitted Infections (STIs): It is effective against certain STIs such as chlamydia and gonorrhea. . Enteric Fever/Typhoid: It may be prescribed for typhoid fever caused by susceptible bacteria. . Other uses: In specific cases, it can be used for conditions like traveler's diarrhea or as an alternative in certain prophylactic treatments (e.g., preventing bacterial endocarditis in penicillin-allergic patients).