IFN-beta, or Interferon beta, is a type of protein produced by the body in response to viral infections. It plays a crucial role in the immune system by helping to regulate the activity of immune cells and enhancing the body's antiviral defenses. IFN-beta is particularly important in the treatment of certain diseases, such as multiple sclerosis, where it helps to reduce inflammation and slow disease progression. IFN-beta is administered as a medication to patients with specific conditions. It can be given through injections and works by modulating the immune response, making it less aggressive against the body's own tissues. This therapeutic use has been shown to improve the quality of life for many individuals affected by autoimmune diseases.