What is XELJANZ/XELJANZ XR?

XELJANZ/XELJANZ XR may cause serious side effects, including serious infections, cancer and immune system problems, tears (perforation) in the stomach or intestines, and changes in certain laboratory test results.

These are not all the possible side effects of XELJANZ/XELJANZ XR. To read more, see Safety & Side Effects.

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What are the serious side effects of XELJANZ/XELJANZ XR?
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