Ceftriaxone 1000 mg + Sulbactam 500 mg is a combination antibiotic injection used to treat a wide range of serious bacterial infections, including those that have developed resistance to other drugs. This medication must be administered by a healthcare professional. Common uses This powerful combination is used for moderate to severe infections in many parts of the body. Respiratory tract infections: Including pneumonia and bronchitis. Urinary tract infections (UTIs): For complicated or resistant UTIs. Skin and soft tissue infections: Such as cellulitis, infected wounds, and abscesses. Intra-abdominal infections: Including peritonitis and other infections within the abdominal cavity. Bone and joint infections: Such as osteomyelitis. Gynecological infections: Including pelvic inflammatory disease. Sepsis: A life-threatening bacterial infection of the bloodstream. Meningitis: An infection of the membranes protecting the brain and spinal cord. Surgical prophylaxis: To prevent infections following surgery, especially abdominal or pelvic procedures.