Fecal Microbiota Transplant for Patients With Chronic Pouchitis

Inclusion Criteria: Patients age 18 or greater with UC who have undergone TPC with IPAA and have one of the following chronic pouchitis phenotypes, each defined as: * Chronic antibiotic dependent pouchitis: * The need for continuous antibiotic therapy (\>4 weeks) to maintain clinical remission and a history of at least 2 attempts in the last 24 months to stop antibiotic therapy resulting in pouchitis episodes, OR * Active pouchitis with a modified Pouchitis Disease Activity Index (mPDAI) ≥5 and a history of ≥4 antibiotic therapies in the last 12 months * Chronic antibiotic refractory pouchitis: * Active pouchitis with a modified Pouchitis Disease Activity Index (mPDAI) ≥5 with no response to antibiotics * Crohn's disease like pouch inflammation on biologic or small molecule therapy with persistent symptoms: * Pre-pouch ileal inflammation, strictures, and/or fistulae, AND * Active biologic or small molecule therapy, AND * Persistent symptoms with mPDAI clinical sub-score ≥ 2 Exclusion Criteria: Patients with UC who underwent TPC with IPAA and meet one of the following criteria will be excluded: * Allergy to vancomycin, metronidazole, or ingredients present in the FMT * Women who are breastfeeding * Women who are pregnant * Participants with fever \> 100.4F/38C or other signs of active illness * Active treatment with biologics (infliximab, adalimumab, golimumab, vedolizumab, ustekinumab) * Active treatment with immunomodulators (azathioprine, 6-mercaptopurine, methotrexate), steroids or any investigational drugs * Crohn's disease like pouch inflammation * Active enteric infection * Isolated cuffitis * Clinically significant strictures of the pouch inlet or outlet * Participation in a clinical trial in the preceding 30 days * Any condition that the physician investigators deems unsafe, including other conditions or medications that the investigator determines will put the participant at greater risk from FMT