Sunfiber®️ natural guar fiber has been classified as a 100 percent natural ingredient by the International Organization for Standardization (technical specification ISO 19657:2017). Sunfiber®️ starts with natural guar beans which are grown in fields that are not treated with chemicals. No preservatives or additives are used or added during manufacturing. Sunfiber®️ is certified Kosher, Halal, vegetarian (not of any animal origin nor derivative) and non-GMO Project Verified, Glyphosate Residue Free and 100% Gluten free.