TriSana Nutrition Brewer's Yeast is a gut health fundamental for your dog. It supports many facets of gut health. Boosting the microbiome in your dog's gut, which is the starting point to gut health, increases digestive health all the way through. It acts as a probiotic, helping increase digestive ability, allowing your dog to get more of the nutrients from its food.
Brewer's Yeast has been shown to improve insulin sensitivity and boost blood sugar control in diabetes cases, due to being naturally rich in glucose tolerance factors. 
It is safe to give to dogs with common yeast infections, and actually beneficial for these cases- it outcompetes the bad yeast in your dog's body.

Veterinary Health Product Number NN.H7A9