Vertex Canine Essentials is an excellent dailyuse supplement that can increase energy, endurance, muscle growth, heat tolerance, and recovery time. It is specifically designed to provide nutritional support for working and performance dogs, but it is also a highly digestable and palatable source of calories for aging or convalescing dogs. Vertex uses premium, predigested meat, whey, and egg proteins to ensure unequalled taste and nearly 100 digestibility and absorption. Combined with pharmaceuticalgrade amino acids, you can expect better performance from your dog, improved stamina, and less physical discomfort after hard workouts. Vertex also uses powerful antioxidants (Vitamins C and E) to help protect your dog from free radicals that injure the body and can cause sickness or disease. This supplement also provides a foodgrade complex carbohydrate source and contains pharmaceuticalgrade glucosamine, chondroitin sulfate, and MSM. Vertex is great for: Canine athletes (agility, flyball, hunting, schutzhund, racing, weight pulling, etc.) Pregnant or lactating females Finicky eaters (add water to make Vertex into an irresistible gravy) Dogs recovering from illness or surgery Dogs that are hard to keep weight on Dogs with low energy levels Stud dogs and brood females 100 satisfaction guaranteed with all CPN products.