Does doctors Prescribe Xeljanz 5 mg Tablet in Arthritis? It is prescribed in Rheumatoid arthritis. If patients want to change the routine of their dosage they should consult with their doctors first. The dose of Xeljanz 5 mg Tablet will be finalize according to the medical history of the patient. https://www.magicinepharma.com/tablet/xeljanz-tofacitinib