 - Patients with active pouchitis who have never been treated with antibiotics antibiotic-naive or who have been previously treated with antibiotics and responded. Antibiotic-dependent patients may be enrolled as long as antibiotic use is discontinued for at least two weeks prior to study entry. Antibiotic-dependent pouchitis is defined as a condition in which a patient with frequent episodes or 4 episodes per year of pouchitis or persistent symptoms requires long-term, continuous antibiotic or probiotic therapy to keep the disease in remission. 