Cloxacillin Sodium Salt Monohydrate is primarily used as an antibiotic to treat infections caused by penicillinase-producing staphylococci. It is effective against a range of bacterial infections, including skin and soft tissue infections, respiratory tract infections, and bone and joint infections. The medication works by inhibiting the synthesis of bacterial cell walls, leading to the destruction of the bacteria.

In clinical settings, it is often administered orally or via injection, depending on the severity and type of infection. It is particularly valuable in hospital environments where resistant bacterial strains are more common. Additionally, it is used in veterinary medicine to treat similar infections in animals.

The drug is also employed in prophylactic measures to prevent infections in patients undergoing surgical procedures, especially those involving the heart or orthopedic implants. Its ability to target resistant bacteria makes it a crucial component in the management of bacterial infections where other antibiotics may fail.