Generic name of Imuran is azathioprine tablets, which has some therapeutic effect on Crohn’s, but the specific therapeutic effect varies from person to person. Azathioprine tablets is a kind of immunosuppressant, mainly by interfering with RNA metabolism and has immunosuppressive effect, can be combined with corticosteroids, other immunosuppressants, to prevent organ transplant recipients from rejection, or used in the treatment of systemic lupus erythematosus, severe rheumatoid arthritis, autoimmune chronic active hepatitis, spontaneous thrombocytopenic purpura, dermatomyositis and so on. Crohn’s disease is a kind of autoimmune disease, the serious condition can use azathioprine tablets for treatment, the effect of the drug by the patient’s severity of the disease, the body’s sensitivity to drugs and other factors, resulting in the existence of a certain degree of variability, the specific can be different from person to person. Contraindications to azathioprine tablets include those who are allergic to the product or 6-azathioprine, those with poor liver function, and pregnant women (or women who are preparing to become pregnant in the near future). Adverse reactions include leukopenia, nausea, vomiting, general malaise, dizziness, diarrhea, and fever. Specific medication should be administered under the guidance of a specialist, and should not be used without authorization to avoid delay.