KONG Calming Chews supplements help alleviate stress and restlessness while promoting relaxation. The soft, highly appetizing chews contain naturally-sourced lemon balm, tryptophan and green tea extract that combine to support feelings of calm. Ideal for use during fireworks, thunderstorms and moments of separation anxiety this supplement is also contains no artificial colors or flavors. Each dog is unique. If no effect within 30 minutes, it is safe to give a second dose. Do not exceed 3 doses within 24 hours. Not a treat. Made in the USA