- Floranorm contains Saccharomyces boulardii a “probiotic,” a friendly organism that helps to fight off disease-causing organisms in the gut such as bacteria and yeast. It is primarily used in treating and preventing recurrent infections associated with the gastrointestinal tract. Floranorm can be used to manage diarrhoea issues, ulcerative colitis, lactose intolerance and yeast. Floranorm Oral Powder works by reducing the excessive secretion of water and electrolytes in gut. Saccharomyces boulardii is a live, non-pathogenic yeast recommended as a probiotic and as a biotherapeutic in the treatment of diarrhoea of various etiology.