Used to treat bacterial infections caused by gram-positive bacteria, especially those resistant to regular penicillin. Commonly prescribed for skin and soft tissue infections, respiratory tract infections, and bone infections like osteomyelitis. Effective against Staphylococcus aureus, including penicillinase-producing strains, due to its resistance to breakdown by bacterial enzymes. Often administered orally or via injection in hospital and outpatient settings. Preferred in cases where penicillin resistance is a concern but narrow-spectrum treatment is needed.