Cosequin® DS Plus MSM and Omega-3's contains FCHG49® Glucosamine Hydrochloride, TRH122® sodium chondroitin sulfate, MSM (Methylsulfonylmethane) and Omega-3's. The combination of glucosamine, chondroitin sulfate and MSM helps maintain joint cartilage and connective tissue. Each chewable tablet also contains Omega-3 fatty acids which supports healthy joints. Use Cosequin® to support mobility for a healthy lifestyle in your pet.