Aminosaccharide and chondroitin are two different drugs with some differences, but both of them can treat osteoarthritis. Aminosaccharide, known as glucosamine, is a natural amino monosaccharide that is not only a component of joint cartilage, it is also widely found in joint fluid and connective tissue, and can play a role in nourishing the joints. Chondroitin, known clinically as chondroitin sulfate, is a drug that delivers important nutrients to the joints, removes waste products from the joints, and promotes the deposition of glucosamine. Therefore, these two drugs can work together to promote cartilage repair and nourish cartilage cells for the treatment of osteoarthritis.