CHILL OUT POWDER is carefully formulated by our experienced team of vets and nutritionists to assist with horses suffering from nervousness, anxiety, or general stress. Featuring a blend of thiamine, tryptophan, magnesium and vitamin E, CHILL OUT POWDER provides horses with the correct ratio of vitamins and minerals needed to help boost brain function and behaviour.Thiamine: Assists with the transmission of nerves, and is highly effective with horses sustained on a high-grain diet. Thiamine..