Horse Health Vita B-12 Crumbles Horse Supplement makes keeping your equine buddy as healthy as a horse easy. Vitamin B-12 helps to support your horse’s nerve and blood cell health and function, and it plays an important role in red blood cell production. This supplement is suitable for all classes of horses. Its larger crumbles help to prevent sorting, so you can top dress even your picky eater’s feed and know that he’ll still get the whole dose.