Our Liquid-Vet Dog Joint Formula features all-natural glucosamine sulfate plus 3 other leading joint care ingredients, which when combined form an effective supplement for not only relieving pain in joints, but preventing joint-related issues from worsening. It employs a “pour over” feeding method, allowing you to simply mix it into your dog’s favorite food without having to worry about discarded, crushed up pills. At Liquid-Vet we use only the best human pharmaceutical grade ingredients in our formulas. Plus, not only do we manufacture at our own plant located in the U.S.A., but we source all our materials from U.S.A. based suppliers. For us, quality control is our ultimate priority and we support that claim with a 100% no-questions-asked money back guarantee on all products.