Lifeplan Joint Action Extra provides Glucosamine and Chondrotin Sulphates, in a sodium-free form, MSM and the important nutrients vitamin C and manganese. These naturally occurring factors are involved in the manufacture of synovial fluid and in sustaining the proper integrity of cartilage and hence in joint and connective tissue health. MSM is a form of sulphur which may help to maintain healthy collagen and good joint health. CONTAINS NO sugar, salt, starch, lactose, gluten, live yeasts, synthetic flavours, artificial colours or preservatives.