etanercept, Enbrel (cont.)

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TNF alpha is a protein that the body produces during when there is inflammation, the body's reaction to injury. TNF alpha promotes inflammation and its associated fever and signs (pain, tenderness, and swelling) in several inflammatory conditions including rheumatoid arthritis and ankylosing spondylitis. Etanercept is a synthetic (man-made) protein that binds to TNF alpha. It thereby acts like a sponge to remove most of the TNF alpha from the joints and blood. This prevents TNF alpha from promoting inflammation and the fever, pain, tenderness, and swelling of joints in patients with rheumatoid or psoriatic arthritis and ankylosing spondylitis. Etanercept prevents the progressive destruction of the joints in patients with rheumatoid arthritis and the arthritis of psoriasis. The FDA approved etanercept in November 1998.

SIDE EFFECTS: The most common side effects are:

TNF alpha has an important role in the responses of the immune system to infections. Thus, blocking the action of TNF alpha with etanercept may worsen or increase the occurrence of infections such as tuberculosis, bacterial sepsis, invasive fungal infections (such as histoplasmosis), and other opportunistic infections (infections that occur primarily in patients with suppressed immune systems). Patients with serious infections should not receive etanercept, and etanercept should be discontinued if a patient develops a serious infection. Etanercept should be used with caution in patients prone to infection, such as those with advanced or poorly controlled diabetes. Children should receive their recommended immunizations before treatment with etanercept.

Medically Reviewed by a Doctor on 9/10/2015

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