Inclusion Criteria:  Patients with inflammatory bowel disease. Over 14 years old. Receive Remsin as a treatment for his disease. And always this treatment that the patient is going to receive is governed by the criteria of clinical judgment and routine clinical practice, not performing any diagnostic or follow-up intervention that is not routine clinical practice.  Exclusion Criteria:  Patients with inflammatory bowel disease under 14 years of age. Or older than this age with inflammatory bowel disease who do not attend the established check-ups