Birch Xylitol Corn Xylitol 1Kg. Bio is a food supplement made from organic corn xylitol. Xylitol is a natural sweetener that is used as an alternative to sugar. This product is a healthy option for sweetening food and drinks, as it has a low glycaemic index and does not promote the formation of cavities. Moreover, as it is made from organic corn, it guarantees the quality and purity of the product.