Provides balanced vitamin and mineral profile for maintenance, broodmares, stallions and working horses. Minerals are critical to reproduction, bone development, nerve function, immune function, hoof, skin and coat quality, energy balance and more. Enhanced with probiotics. Each scoop contains min 4,261 mg/max 4,545 mg calcium, min 1,563 mg phosphorus, min 568 mg potassium, min 227 mg lysine, min 25 mg copper, min 102 mg zinc, min 0.4 mg selenium, min 57 mg manganese, min 2.1 mg iodine, min 8,625 IU vitamin A, min 862 IU vitamin D, min 125 IU vitamin E and min 0.4 mg biotin.