Contains unique blend of herbs and nutrients to help encourage the relaxation of muscles and help support the horse's concentrationA horse with low magnesium may look and feel 'tight' in their natural way of going, excitability or a lack of confidence and can all be caused by a lack of grazing, by the individual metabolism, or can be reduced by travelling or competition.However, NAF's Magic Liquid is more than just magnesium, the blend of specially chosen herbs are all picked for their traditional use in supporting confidence and concentration.NAF Magic Liquid issafe to use in all horses and does not contravene the rules for FEI.