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What is XELJANZ/XELJANZ XR?

XELJANZ/XELJANZ XR can lower the ability of your immune system to fight infections. Some people can have serious infections while taking XELJANZ/XELJANZ XR, including tuberculosis (TB), and infections caused by bacteria, fungi, or viruses that can spread throughout the body. Learn more about the most important information you should know about XELJANZ/XELJANZ XR.

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