A Linezolid Infusion is used to treat infections, including pneumonia, and infections of the skin. Linezolid is in a class of anti bacterials called oxazolidinones. It works by stopping the growth of bacteria. Antibiotics such as linezolid injection will not kill viruses that can cause colds, flu, or other infections. Linezolid is used to treat different types of bacterial infections, such as pneumonia, skin infections, and infections that are resistant to other antibiotics. Linezolid is active against most Gram-positive bacteria that cause disease, including streptococci, vancomycin-resistant enterococci (VRE) etc. The Linezolid Infusion is made for use in various medical places.