MegaMycoBalance is formulated with undecylenic acid and bee propolis to support healthy yeast and fungal balance in the body. Undecylenic acid is an organic fatty acid derived from castor bean oil that supports a healthy balance of yeast in the gut. Bee propolis is a plant resin that bees use to line their hives. MegaMycoBalance can support a healthy balance of vaginal flora by restoring balance to the intestinal flora.