This formula is great for horse"s that are training and exercising daily. 3.75 lbs., Next Level Performance Equine Joint Pellet contains microlactin, which is a patented dried milk protein that helps manage inflammation caused by daily exercise and training. Also contains chondroitin and glucosamine to help support structural integrity of joints and connective tissues and help to maintain joint mobility. Includes manganese as well. Veterinarian recommended.