Dietary supplement. Clinically tested ingredients to promote optimal joint flexibility, lubrication, mobility and comfort. Helps rebuild cartilage tissue. Natrol has combined three of the most beneficial joint health ingredients to give you joints the support they need! Glucosamine works hard to regenerate and rebuild the cartilage tissue. Chondroitin helps maintain the structural integrity of this tissue and promotes lubricating fluids for the joints. Lastly, msm promotes joint and physical function by helping to maintain the elasticity of your joint tissue. With this triple support, your joints will have the opportunity for optimal flexibility, mobility and comfort. No yeast, wheat, corn, milk, egg, soy, glutens, artificial colors or flavors, added sugar, starch or preservatives. (these statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure or prevent any disease).