"Fecal Microbiota Transplantation" (FMT) is a novel treatment approach which involves administration of feces from a healthy (donor) individual into a patient with relapsing CDI to promote recolonization with missing components of normal intestinal flora. Numerous case reports and retrospective case series have suggested benefit of FMT in patients with severe or recurrent CDI with cure rates as high as 100% and a mean cure rate of 89% for the nearly 300 cases reported in the world literature. Although efficacy has been documented in these case reports, to date there has not been a published prospective clinical trial of FMT for CDI.