Natural Yeast Cleanse is a combination of herbal ingredients (Pau D'Arco, Black Walnut and Oregano Oil), Biotin (a B-complex vitamin) and Caprylic Acid (a naturally occurring fatty acid derived from plant oils). These synergistic ingredients may help to support a healthy balance of intestinal bacteria*. The beneficial bacteria that normally populate the gut assist in the digestion of food, produce certain vitamins and promote detoxification processes.This product should not be used during pregnancy, while trying to become pregnant, or while nursing.