Shellfish and allergen-free glucosamine, produced from non-GMO corn. Sustainably produced, GlucosaGreen® reduces solid waste ... generated in the process by 98% and water use by an incredible 99.6%! TSI Group LTD, as the sole developer, manufacturer, and distributor of GlucosaGreen® is committed to full transparency in the supply of this popular ingredient. At TSI we say "Healthy Begins Here." read more