Anakinra is made by Amgen, Inc.
People with rheumatoid arthritis often have high levels of a certain protein called interleukin-1 (IL-1) in their joints.
IL-1 causes inflammation, cartilage damage, and bone erosion. Anakinra is a synthetic form of a different naturally occurring protein in the body that inhibits the effects of IL-1. By binding to IL-1, anakinra can help reduce the symptoms of rheumatoid arthritis, along with the physical damage to the joints.
Because anakinra targets a specific part of the immune system (IL-1), it is called a "biological response modifier" because it changes (modifies) the body's immune response. It is also known as a "biologic" medication, because it is a protein.