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Xeljanz Side Effects Center
Medically reviewed by Min Clinic Staff | Updated: January 2026
- Generic Name: tofacitinib tablets
- Brand Name: Xeljanz
- Drug Class: DMARDs, JAK Inhibitors, DMARDs, Immunomodulators
Xeljanz (Tofacitinib Tablets) side effects drug center
Xeljanz Side Effects Center
What Is Xeljanz?
Xeljanz (tofacitinib citrate) is a Janus kinase (JAK) inhibitor used to treat adults with moderate to severely active rheumatoid arthritis (RA) who have not responded well to methotrexate, or cannot tolerate it.
What Are Side Effects of Xeljanz?
Common side effects of Xeljanz are:
- upper respiratory tract infections,
- headache,
- diarrhea, and
- cold symptoms such as sore throat, runny or stuffy nose.
Tell your doctor if you experience serious side effects of Xeljanz including:
- feeling very tired,
- yellow skin or eyes (jaundice),