Suitable for vegetarians vegans food supplement coated caplets derived from a plant source vegetarian glucosamine hydrochloride is an alternative form of glucosamine rather than being sourced from shellfish it is found in a fungus known as aspergillus niger glucosamine is produced naturally in the joints of the body but rarely found in major food sources it is a key structural component of joint tissue glucosamine is the basis of the synthesis of several important macromolecules includ