The capsules we use are not only vegan but themselves certified Organic. We opted to use pullulan capsules, which are a product of tapioca starch fermentation.The other vegetarian option, HPMC capsules, which are manufactured from chemically made polymer cellulose, have been reported to be responsible for bloating and wind in some people and this possible side effect sent us on a search for a better alternative that would match the premium quality of the powders they contain.