Cloxacillin sodium salt is a semi-synthetic antibiotic that belongs to the penicillin group. It is derived from penicillin V and is known for its bactericidal activity against a wide range of gram-positive bacteria. Cloxacillin sodium salt is commonly used in the treatment of various bacterial infections, including skin and soft tissue infections, respiratory tract infections, and bone infections. It works by inhibiting the synthesis of bacterial cell walls, leading to bacterial cell death. This antibiotic is available in different forms such as capsules, tablets, and injections for oral or parenteral administration.