Saccharomyces cerevisiae CNCM I -3856 is an advanced probiotic yeast contributing to good gastrointestinal health. Saccharomyces Cerevisiae CNCM I-3856 is an unique probiotic as it is the world’s first probiotic with proven analgesic action. Saccharomyces cerevisiae CNCM I -3856 significantly reduces IBS associated abdominal pain/discomfort/bloating without altering stool frequency and consistency.