Vets Best Hip & Joint Dog Supplements help maintain normal, healthy cartilage, connective tissue, and joint mobility for senior dogs, highly active dogs, and large dog breeds prone to hip or joint issues. Our carefully formulated blend of glucosamine, MSM, boswellia, and rosemary also maintain the synovial fluid that lubricates the joints, support strong bones, and help remove damaging free radicals. These natural ingredients are scientifically optimized to a low molecular weight for better absorption and digestion. Ingredients: Glucosamine HCL (Shellfish), Methylsulfonylmethane (MSM), Ascorbic Acid (Vitamin C), Manganese (Amino Acid Chelate), Proprietary Absorptiontioxidant Blend