Saccharomyces boulardii is a natural and safe microorganism with vast scientific research and documentation. This strain has been internationally acclaimed as a well-researched and unique microorganism, and has been safely used for the last 50 years. Saccharomyces boulardii is a natural food supplement, and not a medicine. Saccharomyces boulardii is a unique microorganism which is sold widely in the US, Scandinavia, Germany and France. It has undergone extensive clinical research, demonstrating its ability to support the the body's natural defence against pathogens. This microorganism is more robust to environmental stressors than more common bacterial live cultures, and shows strong resistance to heat, humidity and stomach acidity levels. These live cultures of S. boulardii have been tested and shown to be especially stable and resistant.While we try to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Please note actual image may vary. Information on this site is not intended to diagnose or treat any health condition.