Doc Roy's B Strong - 8 oz Vitamin and Mineral Support for Dogs and Puppies Including all B minerals, Doc Roy's B Strong is the most comprehensive B vitamin and mineral supplement on the market! SUPPORT - Doc Roy's B Strong supports stamina and endurance in stud dogs along with a strong immune system. SUPPLEMENT- B Strong ensures your pet's health and energy level isn't compromised from vitamin B deficiency. This supplement also promotes heart and red blood cell health with iron, copper, and zinc. APPETITE- Doc Roy's B Strong is not only a safe and great tasting concentrated liquid, but it also helps to stimulate your dog's appetite! GREAT FOR - Doc Roy's B Strong is great for breeding, anemic, working, and show dogs as well as dogs that are young, old, or recovering from illness or surgery.