Orencia, also known as abatacept, is an intravenous medication used to treat rheumatoid arthritis, an autoimmune disease of the joints.
Features
Orencia works to block T-cells--special killer cells in the body's immune system--from activating a cascade that leads to the joint pain, swelling and inflammation of rheumatoid arthritis, according to Orencia.com.
Side Effects
According to the Mayo Clinic, Orencia's most common side effects include back pain, bloody urine, cough and headache. Call your doctor if these or other side effects develop.
Dosage
Dosage for Orencia depends on body weight. After receiving the first dose intravenously, the next dose is given after 2 weeks. The next dose is given after 4 weeks, according to Orencia.com. Only a health care professional should administer Orencia.
Warning
Tell your doctor about your medications, medical history and allergies. It is important to visit your doctor regularly so he can determine whether Orencia is working effectively.
Significance
Orencia is used to treat both children with juvenile rheumatoid arthritis and adults with moderate to severe rheumatoid arthritis.


