Ampicillin Sulbactam (Ampihil 1.5) 1g/500mg Powder for Suspension, IM/IV, Vial 1's is a combination antibiotic used to treat various bacterial infections, including respiratory, urinary, skin, and soft tissue infections. Ampicillin inhibits bacterial cell wall synthesis, while Sulbactam prevents the breakdown of Ampicillin by beta-lactamase enzymes produced by resistant bacteria. It is administered via intramuscular (IM) or intravenous (IV) injection, as directed by a healthcare professional.