A horse requires a variety of nutrients to maintain its health. The B vitamins are a group of related vitamins essential for regulating metabolism. A lack of any B vitamins may result in decreased feed intake, which ultimately affects performance, weight management, and overall efficiencies. Bacteria synthesize B-vitamins in the horse's hindgut; however, body storage is poor. Supplemental B vitamins may be beneficial for young, old, debilitated, or hard-working performance horses, as these types of horses may have a decreased population of bacteria in their hindgut. Thiamine (vitamin B-1) is necessary for the metabolism of carbohydrates, fats, and proteins, enabling the horse to get the most from his diet and perform his best. Horse Health Vita B-12 Crumbles supports red blood cell and energy production to maintain physical stamina and help keep horses in peak condition.