... in cartilage and is responsible for the resiliency of cartilage. Descriptions:SunFlowerTM Joint Health Formula OEM private ... make proteins (proteoglycans), which are the building blocks of cartilage.Chondroitin is the most abundant glycosaminoglycan in ... building blocks.MSM, methylsulfonylmethane provides sulfur, a vital building block of joints, cartilage, skin, hair and nails, and methyl ...