Ampicillin (Gopen) 250mg/vial Powder for Injection, IV/IM, Vials 10's is a broad-spectrum penicillin-type antibiotic used to treat bacterial infections such as respiratory tract infections, urinary tract infections, gastrointestinal infections, and septicemia. It works by inhibiting bacterial cell wall synthesis, leading to bacterial cell death. Administered via intravenous (IV) or intramuscular (IM) injection as prescribed by a healthcare professional.