Ceftriaxone injection works by stopping the growth of bacteria that cause infection. It belongs to a class of antibiotics called cephalosporins. Once administered, ceftriaxone injection enters the bloodstream and targets the bacterial cell wall, weakening it and causing the bacteria to bunk and die. It is effect against a wide range of gram-positive and gram-negative bacteria. The ceftriaxone injection is common used to treat infection such as pneumonia, urinary tract infection, skin infection, and meningitis. By direct interfering with bacterial replication, ceftriaxone injection helps the body night off infection and recover more quickly under medical supervision.