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What is XELJANZ/XELJANZ XR?

Common side effects of XELJANZ/​XELJANZ XR include upper respiratory tract infections (common cold, sinus infections), headache, diarrhea, nasal congestion, sore throat, runny nose (nasopharyngitis), and high blood pressure (hypertension). XELJANZ/​XELJANZ XR may also cause serious side effects. Learn more about the most important information you should know about XELJANZ/​XELJANZ XR.

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