So-Kalm Plus contains a premium grade Magnesium with L-Tryptophan, an essential amino acid associated with the production of serotonin, to calm and focus the horse, fed daily can aid concentration and willingness to work, but without removing the edge required for competition. Young horses also have a tendency to be highly strung and distracted, leading to training problems in the future. Feed young horses or horses in their first season So-Kalm Plus to enable them to relax and ensure that their new experiences are good experiences.