Glucosamine Sulphate is a compound that occurs naturally in the body. It is a key building block of cartilage tissue found in joints. Chondroitin Sulphate is similar in structure, and is a major constituent of cartilage. It provides structure, holds water and nutrients, and acts as a transport medium, allowing other molecules to move through cartilage. Contains the preferred form of Glucosamine Sulphate, one stabilised with Potassium Chloride (Glucosamine Sulphate KCI), some are stabilised with Sodium Chloride (NaCI) which is table salt. No artificial flavours or preservatives. No added Salt or Colours. Gluten Free. Wheat Free. Yeast Free. Dairy Free. Soya Free. Corn Free.