Phexin 500 mg is a prescription antibiotic containing cephalexin 500 mg per capsule. Cephalexin belongs to the first-generation cephalosporin class of antibiotics and works by interfering with bacterial cell-wall synthesis, helping eliminate susceptible bacteria.

Cephalexin is commonly prescribed for bacterial infections affecting the respiratory tract, skin and soft tissues, urinary tract, and other sites when the responsible bacteria are susceptible to the medication.

The appropriate dose and duration of treatment depend on the type and severity of infection, patient characteristics, kidney function, and clinical response. Phexin should be used only as directed by a healthcare professional.