Formulated to economically provide all the necessary minerals and trace elements needed by sport, leisure, spelling horses and dry broodmares. Even the best pasture cannot provide all the mineral requirements needed by these horses. Vitamins are not needed on a daily basis so why waste $$$ with combination supplements that may not provide the in- depth formulas, but just provide a lesser amount and a lot of unnecessary ingredients. It can be detrimental to the health of a horse to over-supplement certain vitamins. At times B vitamins are required – stress or high exertion can create a drop and then Vetpro Equine Athlete B Boost can be used for an instant replenishment.