Preliminary Clinical Study on the Effect of L-ornithine on the Efficacy of Ustekinumab in Patients With Crohn's Disease

The goal of this clinical trial is to evaluate the effect of supplementing L-ornithine compared to the control group on the efficacy of Ustekinumab in patients with Crohn\'s disease, and to summarize the role of supplementing L-ornithine in the treatment of CD patients. Participants will be randomized into two groups: the L-ornithine supplementation group and the control group. The patients in the L-ornithine supplementation group received oral ornithine capsules for 8 weeks. The control group did not receive additional intervention. Follow up once a week, and after the study, patients will come to the hospital to finish the evaluation indicators.