What is it?Holland & Barrett High-Strength Glucosamine Supplement is formulated with Vitamin C, which contributes to normal collagen formation for the normal function of cartilage. Glucosamine is one of the key building blocks of cartilage and joint tissue.High Strength, Glucosamine Sulphate Added Vitamin C To Support Healthy Cartilage Contributes To Normal Collagen Formation What Are the Benefits of This Supplement?Glucosamine is naturally found in the body and plays an important role in making the building blocks of healthy joints. Vitamin C contributes to normal collagen formation for the normal function of cartilage. Holland & Barrett International Limited, Barling Way, CV10 7RH, UKHolland & Barrett Limited, 45 Henry St, D01 E9X8, Ireland