Natrol Glucosamine 1500 mg Chondroitin 1200 mg Description: Joint Health Combo Proven Effective in NIH Study! Glucosamine Chondroitin contains the powerful combo proven effective in promoting joint comfort, flexibility and movement in the federally funded joint care study sponsored by the National Institutes of Health (NIH). Glucosamine and Chondroitin have been studied extensively for their role in promoting overall joint health. Glucosamine has been shown to regenerate cartilage tissue, while chondroitin helps promote lubricating fluids for your joints and cartilage. Together this combo provides powerful ingredients backed by solid science to help keep your joints healthy and comfortable. Free Of Yeast, wheat, corn, milk, egg, soy, glutens, artificial colors and flavors, added sugar, starch and preservatives.