Tazact 1.125 GM Injection Tazact 1.125 GM contains Piperacillin, an extended-spectrum ureidopenicillin antibiotic, combined with Tazobactam, a beta-lactamase inhibitor. Piperacillin blocks bacterial cell wall synthesis by targeting penicillin-binding proteins (PBPs), while Tazobactam protects Piperacillin from degradation by beta-lactamase enzymes. It is indicated for treating moderate-to-severe bacterial infections, including pediatric infections, intra-abdominal infections, skin and soft tissue infections, lower respiratory tract infections, and febrile neutropenia.