Thunderbrook Yeasacc is a dried live yeast (unlike bakers or brewers yeasts which are not live extracts). Research shows that Yeasacc helps to maintain a stable environment in the hind gut to ensure good levels of fibre digesting bacteria. Increases fibre and protein digestion. Yeasacc can be found in many of the more expensive probiotic supplement and is already incorporated into our Pure Essentials Base Mix, so you do not need to supplement if using the Base Mix. Nutritionally supports: healthy digestive function, general digestive enhancer.