Vitamin B12 supports the normal production of red blood cells and aids in nervous system health. Horse Health Vita B-12 crumbles contain 50, 000 mcg/lb of vitamin B12 or 3, 125 mcg of vitamin B-12 per 1 oz. Intended for all classes of horses added Horse Health Vita B-12 crumbles to your horse's diet to keep them in top peak condition and added support of cardiovascular and nervous system. | Farnam Vita B-12 Crumbles 3 Lbs