Calm & Relaxed includes lamb, chamomile and l-tryptophan. Chamomile was traditionally used in ancient Greece, Egypt and beyond to aid relaxation. L-tryptophan is essential to form serotonin, the feel good neurotransmitter. Give these treats to your dog before stressful situations such as visits to the vets, car journeys, fireworks, competitions, separation or just as a nice bedtime treat.