Equine Appeasement Pheromone is a product available in Europe and is for used in calming horses. It is a synthetic pheromone based on a natural pheromone secreted from specialized glands associated with the mammary glands. Follow the link to a study conducted at the Equine Behavior Lab which is part of the University of Pennsylvania School of Veterinary Medicine located at New Bolton Center. This article will provide you with more information. http://cal.vet.upenn.edu/projects/equinebehavior/HavDay/hvday02rr.htm
