Cosequin® DS Plus MSM & Omega-3s contains FCHG49® Glucosamine Hydrochloride†, TRH122® Sodium Chondroitin Sulfate†, and MSM (Methylsulfonylmethane). This combination of ingredients helps maintain your dog’s cartilage and connective tissue. Each soft chew also contains omega-3 fatty acids to help support skin & coat health.