Recommended for cats of all sizes - GreenGrown¿ Glucosamine: USP grade glucosamine derived from non animal sources helps to maintain synovial fluid that lubricates the joints. - Recommended for cats of all sizes - Easy to administer - 100% Natural GreenGrown¿ Glucosamine: USP grade glucosamine derived from non animal sources helps to maintain synovial fluid that lubricates the joints. Chondroitin Sulfate USP: Not all chondroitin supplements are of equal quality. Liquid Health uses the same USP grade chondroitin used in its human formulas. Studies have shown that high quality chondroitin has synergistic effects in joint health when used with glucosamine. Opti-MSM®: Most MSM comes from China. Joint Purr-Fection uses the only U.S. manufactured MSM available. Opti-MSM® is manufactured to 99.9% purity under strict quality control standards. Opti-MSM® supports multiple functions in the body including connective tissue. See www.OptiMSM.com for more information. Hayaluronic Acid: ¿The moisture molecule.¿ hyaluronic acid can bind up to 1,000 times its weight in water. Due to its water binding properties, hyaluronic acid can support the lubrication of joints and is beneficial for skin, gum, and eye health as well. Manganese Chelate: Essential part of the enzyme involved in the synthesis of chondroitin sulfate. Taurine: Taurine deficiency can cause numerous health related issues in cats. Because cats secrete taurine through bile acids, they must get this amino acid through food or supplements. Specially formulated to support joint function in cats in a delicious organic beef gravy flavor your cat will love!