What should I avoid while taking azathioprine?

When taking azathioprine, you should avoid taking certain drugs, particularly febuxostat (Uloric). You should also avoid receiving "live" vaccines and stay away from people who have recently received such vaccines. In addition, you may want to avoid those who have a cold, the flu or other infection, and take measures to keep your hands clean and reduce any chances of becoming ill. To avoid further risk of illness, it is recommended that you not have any medical or dental procedures done while on azathioprine.