Ampicillin (Corpilyn) 1g Powder for Injection (I.M./I.V.) is an injectable antibiotic used to treat a wide range of bacterial infections, including respiratory, urinary tract, gastrointestinal, and soft tissue infections. As a broad-spectrum penicillin, Ampicillin works by inhibiting bacterial cell wall synthesis, which leads to the destruction of the bacteria. The 1g vial is intended for intramuscular (I.M.) or intravenous (I.V.) administration, providing effective and rapid action against infections. This product is typically used in hospital settings for more severe or systemic infections that require quick and potent antibacterial treatment.