Naturvet, 40 count, arthrisoothe gold timed release tablets, with enzymes, provides optimal levels of glucosamine, chondroitin, green lipped mussel, hyaluronic acid & msm, combination is recommended to help support, maintain, & contribute to rebuilding damaged cartilage & tissue, helps improve joint mobility & reduce stiffness, antioxidants ester c, vitamin c, & vitamin e help protect against free radicals that cause cellular damage.