FloraMyces contains the nonpathogenic yeast, Saccharomyces boulardii. This formula contains 500 mg or 10 billion viable cells of S- boulardii per serving at the time of manufacture.

This strain does not require refrigeration and has the ability to survive passage through the harsh gastric environment, withstanding high acidity, bile, and heat. This strain is the most-studied strain for its potential use in the prevention of antibiotic-associated diarrheas, and as a general supplement for optimum gastrointestinal health.