Ceftriaxone Injection is a broad-spectrum cephalosporin antibiotic that combats bacterial infections by inhibiting cell wall synthesis. After administration, Ceftriaxone Injection rapidly distributes throughout body tissues and fluids, including the lungs, kidneys, and cerebrospinal fluid, targeting bacteria such as Streptococcus, Escherichia coli, and Neisseria. It binds to penicillin-binding proteins, disrupting peptidoglycan formation, which weakens bacterial cell walls, leading to cell lysis and death. Ceftriaxone Injection is effective against both Gram-positive and Gram-negative bacteria, making it ideal for treating conditions like pneumonia, meningitis, and sepsis. Its long half-life allows once- or twice-daily dosing, ensuring sustained therapeutic levels.