Zylkene ® was recommended to me by my vet for my dog when she was little was excess of joy, when there was trembling in the world, she was very very sharp so it needed to be channeled, even after long walks and games and i moved twice as he needed just a complement to it more stress, and it's been years and it'll take ca has subsided, it makes me more joy in excess speaking very strongly, it does not brutalized, just ca has channeled and it's not an antidepressant, it's just a dietary supplement with breast milk, so no soucy addiction or side effects this is .. the vet who advised me, just open the capsule in two and put this white powder in his food and my dog did not sulk, here this is good for dogs in a state of stress, change house, traveling, care by a nanny, short for any change occurred or that will come in his life etc ...