Long-term use of
azathioprine may infrequently increase your risk of developing certain types of
cancer (e.g.,
skin cancer,
lymphoma). This risk is higher in people using azathioprine after an
organ transplant and in children/young adults being treated for certain bowel diseases (such as
Crohn's disease,
ulcerative colitis). You must be closely monitored by your doctor during treatment and regularly afterwards if your doctor stops treatment with this
medication.Azathioprine may also cause serious (rarely fatal)
blood disorders (decreased bone marrow function leading to
anemia, low number of white
blood cells and platelets). It can lower your body's ability to fight an infection.Keep all medical and laboratory appointments. Tell your doctor immediately if you develop any of the following signs: unusual skin changes, change in the appearance/size of moles, unusual growths/lumps,
swollen glands, swollen or painful
abdomen, unexplained
weight loss, night sweats, unexplained
itching, signs of infection (e.g., fever, persistent
sore throat), easy bruising/bleeding, or unusual tiredness.
See also Warning section.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.You may experience stomach/intestinal symptoms such as
nausea, vomiting,
diarrhea, or loss of appetite. If these effects persist or worsen, notify your doctor immediately. These symptoms may be reduced by taking the medication after meals. Talk to your doctor or pharmacist about other dosing advice that may also help with these symptoms.Although unlikely, more severe stomach/intestinal symptoms (e.g., severe nausea/vomiting/diarrhea, stomach/
abdominal pain) may occur as part of a very serious
allergic reaction. Seek immediate medical attention if you have severe stomach/intestinal symptoms or other symptoms of a serious allergic reaction which may include: fever, shaking chills,
rash, itching/swelling (especially of the face/
tongue/throat), severe
dizziness,
trouble breathing, cough, new or worsening joint/muscle aches, dark urine.Tell your doctor immediately if any of these unlikely but serious side effects occur: weakness, muscle loss,
vision changes,
hair loss, cold/numbness in the fingers, mouth sores, difficult/painful swallowing, greasy stools.Seek immediate medical attention if any of these rare but very serious side effects occur: yellowing
eyes/skin, swelling/extra fluid around the abdomen, vomit that contains blood or looks like coffee grounds, black stools.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Before taking azathioprine, tell your doctor or pharmacist if you are allergic to it, or if you have any other
allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease,
liver disease, blood disorders, decreased bone marrow function, history of cancer (such as lymphoma), active infections, certain enzyme disorder (TPMT deficiency).Do not have
immunizations/vaccinations without the consent of your doctor, and avoid contact with people who have recently received polio vaccine by mouth or
flu vaccine inhaled through the nose.Since this medication can increase your risk of developing serious infections, wash your hands well to prevent the spread of infections. Avoid contact with people who have illnesses that may spread to others (e.g., flu, chickenpox).Use caution with sharp objects like safety razors or nail cutters, and avoid activities such as contact sports to lower the chance of getting cut, bruised, or injured.Kidney function declines as you grow older. This medication is removed by the kidneys. Therefore, the elderly may be more sensitive to the effects of this drug.This medication is not recommended for use during pregnancy. It may harm an unborn baby. Consult your doctor for more details. It is recommended that men and women use two effective forms of
birth control (e.g.,
condoms,
birth control pill) while taking this medication. However, this medication can decrease the effectiveness of intrauterine devices (IUDs). This can result in pregnancy. Talk to your doctor about other effective birth control choices.This medication passes into
breast milk and may have undesirable effects on a nursing
infant. Therefore, breast-feeding while using this drug is not recommended. Consult your doctor before breast-feeding.