Source Naturals Glucosamine Chondroitin Complex With Msm Provides Four Important Building Blocks For Healthy Joints And Connective Tissues: Glucosamine, Chondroitin, Bioavailable Sulfur (Msm), And Vitamin C. Glucosamine, An Amino Sugar, Is An Essential Structural Component Of Glycosaminoglycans, Large Linear Molecules That Help To Lubricate Joints Suggested Use: 3 Tablets Daily With Meals Well Made Supplement: Contains Shellfish (Shrimp, Crab, And Lobster) And Soy Over 40 Years Of Trust. Source Naturals Was Created In 1982 By Ceo Ira Goldberg To Support Everyoneã¢ÂS Potential To Enjoy Optimal Health Manufactured In The Usa. Manufactured In Scotts Valley, Ca, Under The Good Manufacturing Practices (Cgmps) Established By The Us Food And Drug Administration. (Fda)