What is Tofacitinib citrate (Xeljanz), and how does it work (mechanism of action)?

Tofacitinib is an oral drug used for treating rheumatoid arthritis. It belongs to a class of drugs called Janus kinase (JAK) inhibitors. JAKs are enzymes (proteins) that regulate chemical signaling pathways that control biologic processes such as blood formation and the immune response that causes the pain, tenderness and swelling of inflammation. JAKs are found in many cells, especially stem cells in bones and joints. Inhibition of JAKs by tofacitinib prevents inflammation and tissue destruction that is associated with the inflammation of rheumatoid arthritis. Tofacitinib was approved in November 2012.

What brand names are available for Tofacitinib citrate (Xeljanz)?

Xeljanz

Is Tofacitinib citrate (Xeljanz) available as a generic drug?

No

Do I need a prescription for Tofacitinib citrate (Xeljanz)?

Yes

What are the side effects of Tofacitinib citrate (Xeljanz)?

Side effects of tofacitinib are:

Tofacitinib carries a boxed warning of risk of developing infections that may lead to hospitalization or death.

Patients must be carefully monitored for the development of signs and symptoms of infection before and during the treatment of tofacitinib.

What is the dosage for Tofacitinib citrate (Xeljanz)?

The recommended dose in adults is: One tablet (5 mg) by mouth twice daily with or without food.

Safe and effective use of tofacitinib is not established in pediatric patients.

Is Tofacitinib citrate (Xeljanz) safe to take if I’m pregnant or breastfeeding?

There are no adequate studies of tofacitinib to determine safe and effective use in pregnant women.

It is not known whether tofacitinib enters breast milk; therefore, it is best to be cautious before using it in nursing mothers.

What else should I know about Tofacitinib citrate (Xeljanz)?

What preparations of Tofacitinib citrate (Xeljanz) are available?

Tofacitinib is available as film-coated, immediate-release, 5 mg tablets.

How should I keep Tofacitinib citrate (Xeljanz) stored?

Tofacitinib should be stored at room temperature between 20 C to 25 C (68 F to 77 F).

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Medically Reviewed on 3/26/2019

References

Medically reviewed by John P. Cunha, DO, FACOEP; Board Certified Emergency Medicine

REFERENCE:

Xeljanz Prescribing Information.