SELTIN 375 SELTIN 375 SELTIN Tablet-375 is a semi synthetic double ester that combines ampicillin with the beta-lactamase inhibitor sulbectam.Hydrolyzed in the gastrointestinal tract after oral administration to releaseequimolar quantities of ampicillin & sulbactam.To be effective against a wid erange of gram-positive & gram-negative bacteria.The combination of sulbactam with the beta-lactam antibiotic ampicillin restores the bactericidal of ampicillin.