Chondroitin sulfate is a structural component of cartilage that attracts and retains water, giving cartilage its shock-absorbing properties. As a supplement, it works through two mechanisms: (1) it inhibits the enzymes (matrix metalloproteinases, IL-1β) that degrade cartilage, slowing structural damage; and (2) it stimulates chondrocytes (cartilage cells) to produce new proteoglycans and collagen. The anti-inflammatory effect reduces pain, while the structural effect is what shows up on X-rays as preserved joint space. But molecular weight and purity determine whether enough bioactive CS actually reaches the joint.
No significant moderate interactions identified.
Independently graded against 178,763 indexed supplements and 757 reviewed supplement and medication pairs, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.