Recommended to support healthy joint function in dogs. Active Ingredients per soft chew: BIOVAFLEX™ Egg Shell Membrane (chicken egg shells) 198 mg Hyaluronic Acid (as Sodium Hyaluronate) 24 mg Boswellia serrata Extract (containing 65% Boswellic Acids) 15 mg Vitamin D3 (cholecalciferol) 150 IU