Product Description


A serotonin deficiency in your pet can result in aggression, depression, moodiness or a dry and lifeless coat. Help your pet feel: Relaxed and Secure*. Happy and Stress-Free*. Calm and Content*. It is calming to the nerves without harmful side effects.*. Lidtke L-Tryptophan is a staple of professional show dog and racehorse handlers, helping their animals remain calm during performance.