Yeast Formula keeps Yeast Levels in check. -Oregano and thyme aid in digestion -Peppermint Oil supports colon function -Goldenseal contains alkaloid compounds beneficial for overall health The body¿s friendly bacteria normally keep yeast levels in balance. Because this balance is so important, Yeast Formula was developed. This supplement includes high-quality oil extracts of oregano, thyme, and peppermint with a standardized extract of goldenseal root. Scientists recognize that the volatile oils of oregano and thyme play a role in digestion and other body functions. Peppermint oil is widely used in Europe to support colon function. And goldenseal contains alkaloid compounds that show great promise for human health.