Glucosamine is a naturally occurring amino sugar in the human body. The vitamin C contained contributes to normal collagen formation for normal cartilage function and a normal function of the bones. Raab veganes glucosamine is produced using a fermentation process from vegetable sources. With vitamin C for normal collagen formation for normal cartilage functional recommendation/use two capsules with plenty of fluid for a meal. , vegetable capsule shell: hydroxypropylmethyl cellulose