Do not take this medicine with any of the following medications:
-febuxostat
-mercaptopurine

This medicine may also interact with the following medications:
-allopurinol
-aminosalicylates like sulfasalazine, mesalamine, balsalazide, and olsalazine
-leflunomide
-medicines called ACE inhibitors like benazepril, captopril, enalapril, fosinopril, quinapril, lisinopril, ramipril, and trandolapril
-mycophenolate
-sulfamethoxazole; trimethoprim
-vaccines
-warfarin

They need to know if you have any of these conditions:
-infection
-kidney disease
-liver disease
-an unusual or allergic reaction to azathioprine, other medicines, lactose, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast feeding

Your condition will be monitored carefully while you are receiving this medicine.

This medicine may increase your risk of getting an infection. Stay away from people who are sick. See your doctor if you get an infection.

Women should inform their doctor if they wish to become pregnant or think they might be pregnant. There is a potential for serious side effects to an unborn child. Talk to your health care professional or pharmacist for more information.

Men may have a reduced sperm count while they are taking this medicine. Talk to your health care professional for more information.

This medicine may increase your risk of getting certain kinds of cancer. Talk to your doctor about healthy lifestyle choices, important screenings, and your risk.

This drug is given in a hospital or clinic and will not be stored at home.