Xeljanz may cause side effects in some users, such as headaches or diarrhea. They should be transient, but if either of these effects lasts or worsens, a doctor or pharmacist should be notified immediately.
The guidelines include specific warnings about an increased risk of infections, particularly for people aged 65 or older who have diabetes, chronic lung disease, or are taking corticosteroids. Symptoms that need immediate attention include painful skin rash or blisters, which may be a sign of herpes zoster, or notice any new growth or changes in existing moles or spots. If you have been in close contact with a person with tuberculosis, report this to a healthcare provider.
Please read the patient information leaflet that comes with the medication. This contains detailed information about the possible serious side effects of treatment with JAKi medications.
Xeljanz is approved for treating patients who have not responded adequately to prior treatment using tumor necrosis factor (TNF) blockers that did not work well or could not be tolerated.
The main conditions for which Xeljanz has FDA approval are:
- Moderately to severely active rheumatoid arthritis: an autoimmune and inflammatory disease in which the immune system attacks healthy cells in the body, causing painful swelling, mainly in the joints
- Active psoriatic arthritis: a form of arthritis with swollen and painful joints and red, scaly rashes, and thick, pitted fingernails
- Moderately to severely active ulcerative colitis: a chronic inflammatory bowel disease (IBD) caused by abnormal reactions of the immune system that result in inflammation and ulcers on the inner lining of the large intestine
- Active ankylosing spondylitis: a type of arthritis that causes inflammation in the joints and ligaments of the spine.
Doctors are also now treating several other conditions with off-label Xeljanz, including:
- Psoriasis
- Alopecia areata causing hair loss
- Rheumatic diseases include dermatomyositis, polymyositis, systemic sclerosis, and systemic lupus erythematosus.