Effects of Immunonutrition on the Improvement of Postoperative Adjuvant Chemotherapy Related Adverse Reactions in Patients With Gastrointestinal Tumors

Inclusion Criteria:

1. Subjects voluntarily and sign an informed consent form;
2. Age ≥ 18 years old and ≤ 75 years old;
3. Patients with stage II-III gastrointestinal malignancies with clear pathological diagnosis and undergoing radical surgery
4. No adjuvant chemotherapy received after surgery
5. The Eastern Cancer Collaborative Group's Physical State Score (ECOG) is 0-2 points;
6. No contraindications to chemotherapy and the use of fluorouracil based chemotherapy regimens;

Exclusion Criteria:

1. Allergy to the components of immune nutrients, allergic constitution, or other inability to eat;
2. Participated in other drug or food clinical trials within 2 months prior to enrollment;
3. Having a history of immune deficiency, including HIV testing positive, or having other acquired or congenital immune deficiency diseases, or having a history of organ transplantation, or active infections that are not suitable for chemotherapy (as determined by the researcher);
4. Subjects cannot guarantee compliance after participating in the study;
5. Other researchers believe that it is not suitable for enrollment.