Ampicillin Sulbactam (Ampihil 750) 500mg/250mg Powder for Injection, IM/IV, Vial 1's is a combination antibiotic used to treat a variety of bacterial infections, including respiratory, urinary, skin, and soft tissue infections. Ampicillin works by inhibiting bacterial cell wall synthesis, while Sulbactam helps prevent the degradation of Ampicillin by beta-lactamase enzymes produced by resistant bacteria. It is administered via intramuscular (IM) or intravenous (IV) injection as prescribed by a healthcare professional.