Glucosamine Sulphate 500mg & Chondroitin Sulphate 400mg Tablets. Glucosamine Sulphate plays a role in the production of cartilage. Chondroitin Sulphate is a major constituent of cartilage. Both these substances play a key role in maintaining healthy mobile joints. FSC Glucosamine & Chondroitin uses naturally sourced Glucosamine & Chondroitin derived from fish.