NOW Foods Glucosamine Sulfate 750 mg, 240 Veg Capsules, with UL Dietary Supplement Certification. Supports joint mobility and comfort by providing the essential building blocks for cartilage tissue. Glucosamine forms glycosaminoglycans and proteoglycans, key components of cartilage that attract water for a lubricated, cushioned joint. NOW’s glucosamine method is AOACI industry standard. Natural color variation may occur.