Joint Health Support for Horses: Cosequin is the #1 veterinarian recommended joint health supplement brand*. This supplement is formulated with glucosamine, chondroitin sulfate, and methylsulfonylmethane (MSM) to support joint healthOptimized Formula with MSM: This supplement is a convenient way to provide MSM along with the proven ingredients in the original Cosequin formulaEasy to Serve: Cosequin Optimized Equine Joint Health Supplements come in an easy to administer tasty powderFormulated for Your Horse: The researched ingredients in Cosequin work together to help protect the cartilage in your horse’s joints by supporting healthy cartilage matrix as well as inhibiting certain enzymes that break down cartilageBacked by Science: Nutramax Laboratories Veterinary Sciences supplements are veterinarian formulated with high-quality ingredients to support your horse’s joint health, no matter their discipline or performance level