Natures Aid Glucosamine & Chondroitin Complex provides 500mg Glucosamine Sulphate 2KCl and 100mg marine sourced Chondroitin Sulphate per capsule. This is combined with Rosehip, Ginger and Turmeric plus Vitamin C.  Vitamin C is important as it contributes to normal collagen formation for the normal function of cartilage. These capsules are convenient and easy to take.