Thorne Research, Perma-Clear, 180 Vegetarian CapsulesDietary Supplement Hypoallergenic Altered intestinal microbial flora can occur alone, but it is often just one component of less than optimal gastrointestinal health, which can also include malabsorption and increased gut permeability. In the latter, molecules that would otherwise be too large to cross the gut mucosa are absorbed into the bloodstream, which can result in food allergies, autoimmune processes, and other systemic symptoms. Perma Clear