Xeljanz Warnings and Precautions
A number of warnings for using Xeljanz safely include precautions for people who have certain medical conditions, such as liver disease or kidney disease. Problems like these may increase your risk for serious side effects or other complications. Other safety concerns apply to people who are taking certain medications or those who have certain allergies.
- Liver disease, such as hepatitis, cirrhosis, or liver failure
- Kidney disease, such as kidney failure, or if you are on dialysis
- An infection of any kind
- Ever had tuberculosis or hepatitis
- Low blood cell counts, including low platelets, white blood cells, or red blood cells (anemia)
- Any allergies, including to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant
You should also tell your healthcare provider about all other medications you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.
Some warnings and precautions to be aware of prior to taking this medication include the following:
- Xeljanz can make it harder for your body to fight an infection. As a result, you could develop potentially serious bacterial, viral, or fungal infections. You could also get a painful skin rash caused by the herpes zoster virus (shingles). Let your healthcare provider know if you develop any sign of an infection, such as:
- Body aches and pains
- Painful skin blisters or a rash.
- Because Xeljanz diminishes the body's ability to fight infections, infections that would normally be mild may become quite dangerous. Uncommon infections that are not usually seen in healthy individuals may also occur. These risks must be carefully considered before you start taking Xeljanz.
- You should be tested for tuberculosis (typically using a skin test) before starting Xeljanz. If there is evidence that you have tuberculosis (or if you have had it in the past), you will need to be treated before you can start taking Xeljanz.
- Because of its effects on the immune system, Xeljanz may allow inactive viruses to become active in the body. This can cause shingles (when the chickenpox virus becomes reactivated) or can cause a reactivation of hepatitis B or C.
- As is possible with many medications that suppress the immune system, Xeljanz may increase the risk for certain cancers. Discuss this risk with your healthcare provider, especially if you have a history of any type of cancer.
- During studies, there were a few cases of gastrointestinal perforation (tears in the stomach or intestines) in people taking Xeljanz, although it is not entirely clear if the drug played any specific role in these cases. Nonetheless, make sure to report any symptoms of a perforation, such as new, unexplained digestive pain or an unexplained change in bowel habits, right away. People with a history of diverticulitis may have a higher risk for this problem.
- Xeljanz can cause low red blood cells, white blood cells, and platelet counts. This can increase your risk for anemia, infections, and bleeding. Your healthcare provider will monitor your blood cell counts, using a simple blood test, before you start treatment and routinely during treatment.
If your blood cells counts drop too low, you may need to temporarily stop taking Xeljanz or take a lower dose. Tell your healthcare provider if you experience unusual bleeding or bruising, extreme tiredness or fatigue, or shortness of breath.
- It is unknown how Xeljanz may interact with vaccines. You should not receive any "live" vaccines during treatment. It is important for your healthcare provider to double check that you are caught up with all your vaccines before starting this medication.
- Xeljanz can cause increases in cholesterol (including both good and bad cholesterol) and liver enzymes. Your healthcare provider should monitor your cholesterol and liver enzymes while you are taking this medication.
- Xeljanz may react with a number of other medications (see Xeljanz Drug Interactions).
- Xeljanz is a pregnancy Category C medication, which means it may not be safe for use in pregnancy, although the full risks are currently unknown (see Xeljanz and Pregnancy).
- It is unknown whether Xeljanz passes through breast milk. Therefore, if you are breastfeeding or plan to start, discuss this with your healthcare provider prior to taking the drug (see Xeljanz and Breastfeeding).