Ceftriaxone Sodium is a third-generation, semi-synthetic cephalosporin antibiotic belonging to the β-lactam class. It is characterized by its extended plasma half-life, broad-spectrum activity, and enhanced stability against β-lactamases. In veterinary medicine, it is used primarily as an injectable parenteral antibiotic for serious systemic bacterial infections in cattle, swine, small animals, and poultry, where oral therapy is impractical or insufficient .
Because it is not absorbed after oral administration, Ceftriaxone Sodium is formulated exclusively for intramuscular (IM) or intravenous (IV) use, making it a staple parenteral antibiotic in clinical veterinary practice.
Mechanism:
Ceftriaxone Sodium exerts its bactericidal effect by binding to penicillin-binding proteins (PBPs) located on the inner membrane of the bacterial cell wall. This binding inactivates PBPs, which are essential enzymes (transpeptidases) responsible for the final cross-linking step of peptidoglycan synthesis. Without proper cross-linking, the bacterial cell wall loses structural integrity, leading to cell lysis and death.
