(tofacitinib)
Advise patients to read the FDA-approved patient labeling (Medication Guide and Instructions for Use).
Serious Infections
Inform patients that XELJANZ (tablets and oral solution) and XELJANZ XR (extended-release tablets) may lower the ability of their immune system to fight infections. Advise patients not to start taking XELJANZ/XELJANZ XR if they have an active infection. Instruct patients to contact their healthcare provider immediately during treatment if symptoms suggesting infection appear to ensure rapid evaluation and appropriate treatment [see Warnings and Precautions (5.1)].
Advise patients that the risk of herpes zoster, some cases of which can be serious, is increased in patients treated with XELJANZ/XELJANZ XR [see Warnings and Precautions (5.1)].
Malignancies and Lymphoproliferative Disorders
Inform patients that XELJANZ/XELJANZ XR may increase their risk of certain cancers, and that lymphoma and other cancers have been observed in patients taking XELJANZ. Instruct patients to inform their healthcare provider if they have ever had any type of cancer [see Warnings and Precautions (5.3)].
Major Adverse Cardiovascular Events
Inform patients that XELJANZ/XELJANZ XR may increase their risk of major adverse cardiovascular events (MACE) defined as myocardial infarction, stroke, and cardiovascular death. Instruct all patients, especially current or past smokers or patients with other cardiovascular risk factors, to be alert for the development of signs and symptoms of cardiovascular events [see Warnings and Precautions (5.4)].
Thrombosis
Advise patients to stop taking XELJANZ/XELJANZ XR and to call their healthcare provider right away if they experience any symptoms of thrombosis (sudden shortness of breath, chest pain worsened with breathing, swelling of leg or arm, leg pain or tenderness, red or discolored skin in the affected leg or arm) [see Warnings and Precautions (5.5)].
Hypersensitivity
Advise patients to stop taking XELJANZ/XELJANZ XR and to call their healthcare provider right away if they experience any symptoms of allergic reactions while taking XELJANZ/XELJANZ XR [see Warnings and Precautions (5.7)].
Hypoglycemia in Patients with Diabetes
Consider advising patients with diabetes to increase monitoring of blood glucose since hypoglycemia, including severe hypoglycemia, has been reported after starting XELJANZ/XELJANZ XR. Advise patients with diabetes to notify their healthcare provider if they develop signs or symptoms of hypoglycemia [see Warnings and Precautions (5.8)].
Important Information on Laboratory Abnormalities
Inform patients that XELJANZ/XELJANZ XR may affect certain lab test results, and that blood tests are required before and during XELJANZ/XELJANZ XR treatment [see Warnings and Precautions (5.9)].
Pregnancy
Advise pregnant females and females of reproductive potential of the potential risk to a fetus. Advise females to inform their prescriber of a known or suspected pregnancy [see Use in Specific Populations (8.1)].
Lactation
Advise women not to breastfeed during treatment with XELJANZ/XELJANZ XR and for at least 18 hours after the last dose of XELJANZ or 36 hours after the last dose of XELJANZ XR [see Use in Specific Populations (8.2)].
Infertility
Advise females of reproductive potential that XELJANZ/XELJANZ XR may impair fertility [see Use in Specific Populations (8.3), Nonclinical Toxicology (13.1)]. It is not known if this effect is reversible.
Residual Tablet Shell
Patients receiving XELJANZ XR may notice an inert tablet shell passing in the stool or via colostomy. Patients should be informed that the active medication has already been absorbed by the time the patient sees the inert tablet shell.
This product’s labeling may have been updated. For the most recent prescribing information, please visit www.pfizer.com.
LAB-0445-31.0
| This Medication Guide has been approved by the U.S. Food and Drug Administration. Revised: June 2026 | |||||
MEDICATION GUIDE | |||||
XELJANZ (ZEL' JANS') | XELJANZ XR (ZEL' JANS' EKS-AHR) | XELJANZ (ZEL' JANS') | |||
What is the most important information I should know about XELJANZ/XELJANZ XR/XELJANZ oral solution? | |||||
1. | Serious infections. XELJANZ/XELJANZ XR/XELJANZ oral solution are medicines that affect your immune system. XELJANZ/XELJANZ XR/XELJANZ oral solution can lower the ability of your immune system to fight infections. Some people can have serious infections while taking XELJANZ/XELJANZ XR/XELJANZ oral solution, including tuberculosis (TB), and infections caused by bacteria, fungi, or viruses that can spread throughout the body. Some people have died from these infections.
You should not start taking XELJANZ/XELJANZ XR/XELJANZ oral solution if you have any kind of infection unless your healthcare provider tells you it is okay. You may be at a higher risk of developing shingles (herpes zoster).
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After starting XELJANZ/XELJANZ XR/XELJANZ oral solution, call your healthcare provider right away if you have any symptoms of an infection. XELJANZ/XELJANZ XR/XELJANZ oral solution can make you more likely to get infections or make worse any infection that you have. | |||||
2. | Increased risk of death in people 50 years of age and older who have at least 1 heart disease (cardiovascular) risk factor and are taking XELJANZ 5 mg or 10 mg twice daily. | ||||
3. | Cancer and immune system problems. XELJANZ/XELJANZ XR/XELJANZ oral solution may increase your risk of certain cancers by changing the way your immune system works.
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4. | Increased risk of major cardiovascular events such as heart attack, stroke or death in people 50 years of age and older who have at least 1 heart disease (cardiovascular) risk factor and are taking XELJANZ 5 mg or 10 mg twice daily, especially if you are a current or past smoker.
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5. | Blood clots in the lungs, veins of the legs or arms, and arteries. Blood clots in the lungs (pulmonary embolism, PE), veins of the legs (deep vein thrombosis, DVT) and arteries (arterial thrombosis) have happened more often in people who are 50 years of age and older and with at least 1 heart disease (cardiovascular) risk factor taking XELJANZ 5 mg or 10 mg twice daily. Blood clots in the lungs have also happened in people with ulcerative colitis. Some people have died from these blood clots.
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6. | Tears (perforation) in the stomach or intestines.
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7. | Allergic reactions.
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8. | Low blood sugar (hypoglycemia) in people with diabetes. If you have diabetes, your healthcare provider may tell you to check your blood sugar (glucose) more often during treatment with XELJANZ/XELJANZ XR/XELJANZ oral solution. Call your healthcare provider if you have any problems with low blood sugar. | ||||
9. | Changes in certain laboratory test results. Your healthcare provider should do blood tests before you start taking XELJANZ/XELJANZ XR/XELJANZ oral solution and while you take XELJANZ/XELJANZ XR/XELJANZ oral solution to check for the following side effects:
Your healthcare provider should routinely check certain liver tests. | ||||
See "What are the possible side effects of XELJANZ/XELJANZ XR/XELJANZ oral solution?" for more information about side effects. | |||||
What is XELJANZ/XELJANZ XR/XELJANZ oral solution?
It is not known if XELJANZ/XELJANZ XR/XELJANZ oral solution is safe and effective in people with Hepatitis B or C. | |||||
What should I tell my healthcare provider before taking XELJANZ/XELJANZ XR/XELJANZ oral solution?
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. XELJANZ/XELJANZ XR/XELJANZ oral solution and other medicines may affect each other causing side effects.
Know the medicines you take. Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine. | |||||
How should I take XELJANZ/XELJANZ XR/XELJANZ oral solution?
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What are the possible side effects of XELJANZ/XELJANZ XR/XELJANZ oral solution? XELJANZ/XELJANZ XR/XELJANZ oral solution may cause serious side effects, including:
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Common side effects of XELJANZ/XELJANZ XR/XELJANZ oral solution in people with rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis include:
Common side effects of XELJANZ/XELJANZ XR in people with ulcerative colitis include:
Common side effects of XELJANZ/XELJANZ oral solution in children with polyarticular course juvenile arthritis and psoriatic arthritis include:
Tell your healthcare provider if you have any side effect that bothers you or that does not go away. | |||||
How should I store XELJANZ/XELJANZ XR/XELJANZ oral solution?
Keep XELJANZ/XELJANZ XR/XELJANZ oral solution and all medicines out of the reach of children. | |||||
General information about the safe and effective use of XELJANZ/XELJANZ XR/XELJANZ oral solution. | |||||
What are the ingredients in XELJANZ 5 mg? This Medication Guide may have been updated. For the most recent Medication Guide, please visit www.pfizer.com. ![]() LAB-0535-17.0 | |||||
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