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What is XELJANZ/XELJANZ XR?

XELJANZ/XELJANZ XR is a prescription medicine called a Janus kinase (JAK) inhibitor. XELJANZ/XELJANZ XR is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well.

XELJANZ/XELJANZ XR is used to treat adults with active psoriatic arthritis in which methotrexate or other similar medicines called nonbiologic disease-modifying antirheumatic drugs (DMARDs) did not work well.

It is not known if XELJANZ/XELJANZ XR is safe and effective in people with hepatitis B or C.

XELJANZ/XELJANZ XR is not recommended for people with severe liver problems.

It is not known if XELJANZ/XELJANZ XR is safe and effective in children.