What is this product?
Xeljanz is a Janus kinase (JAK) inhibitor. It helps treat active psoriatic arthritis, moderate to severe ulcerative colitis, and moderate to severe rheumatoid arthritis. The manufacturer of this product is Pfizer, a pharmaceutical company.
What is it made of?
Xeljanz is made of tofacitinib, an ingredient with JAK inhibiting properties. It interrupts the JAK pathway to prevent Signal Transducers and Activators of Transcription (STATs) from being phosphorylated and activated. The formula also contains excipients such as croscarmellose sodium, titanium dioxide, triacetin, and lactose monohydrate. The package insert can be referred to for further details.