Ceftriaxone (ceftriaxone sodium and dextrose) Injection is an antibacterial drug used to treat conditions such as lower respiratory tract infections, skin and skin structure infections, urinary tract infections, pelvic inflammatory disease, bacterial septicemia, bone and joint infections, and meningitis.
Ceftriaxone interferes with the biosynthesis of the peptidoglycan component of the bacterial cell way by binding to and inactivating penicllin-binding proteins (PBPs). Tazobactam is a penicillanic acid sulfone derivative with -lactamase inhibitory properties. It enhances the activity of -lactam antibacterials against -lactamase-producing bacteria.
Ceftriaxone: 98% bound to plasma proteins; crosses the blood brain barrier. Tazobactam: About 30% bound to plasma proteins; widely distributed to tissues and body fluids.
Ceftriaxone: Elimination half-life is about 8.7 hours; 33-67% removed as unchanged drug. Tazobactam: Removed mainly via kidneys with 80% of an administered dose as unchanged drug.