Linezolid is primarily used as an antibiotic to treat infections caused by Gram-positive bacteria, including resistant strains like methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus (VRE). It is effective in treating skin and soft tissue infections, pneumonia, and certain types of bloodstream infections. Linezolid is often reserved for cases where other antibiotics have failed due to its unique mechanism of action, which inhibits bacterial protein synthesis. It is available in both oral and intravenous forms, making it versatile for hospital and outpatient use. However, its use is carefully monitored due to potential side effects such as myelosuppression and neuropathy with prolonged use. It is also employed in treating tuberculosis when first-line drugs are ineffective.