Natures Aid Glucosamine Sulphate 2KCl 1000mg with Vitamin C contributes to normal collagen formation for the normal function of cartilage. Glucosamine is a natural amino sugar present in the connective tissues of our body. Glucosamine plays a significant role in the construction of cartilage. Cartilage is the tough but flexible tissue that covers the ends of your bones at a joint. Healthy cartilage helps the body move by allowing bones to glide over each other. Cartilage also protects bones by preventing them from rubbing against each other.