Monday, September 28, 2009

DMARDs for Rheumatoid Arthritis

All biologic response modifiers must be injected. Because of their cost , biologics are often reserved for people who have not completely responded to DMARDs and for those who cannot tolerate DMARDs in doses large enough to control inflammation. Unlike DMARDs, which can take a month or more to begin working, biologics work rapidly, within two weeks for some medications and within four to six weeks for others. Abatacept is usually recommended only for people with moderate or severe rheumatoid arthritis that is not controlled with methotrexate and an anti-TNF agent. Abatacept interferes with the activation of T cells. Anakinra cannot be used at the same time as anti-TNF agents due to the risk of infection. It is occasionally recommended for selected individuals who do not respond to anti-TNF agents. Anakinra is significantly less potent than TNF inhibitors in most people with rheumatoid arthritis. Biologics that bind tumor necrosis factor , called anti-TNF treatments, include Etanercept , adalimumab , and infliximab.