Bluebonnet‚™ Vegetarian Glucosamine MSM (Shellfish-Free) Capsules contain a complementary, truly vegetarian blend of glucosamine hydrochloride Regenasure®, derived from corn and patented OptiMSM®. This formula provides a unique fermentation-derived glucosamine produced from a vegetable source (corn). Available in easy-to-swallow vegetable capsules for maximum assimilation and absorption.