Vet's Best knows that dogs are prone to varying levels of stress, anxiety, and nervousness depending on their immediate environment. Vet's Best Comfort Calm helps your dog relax during stressful moments. Comfort Calm contains an effective calming formula without any adverse side-effects. Vet's Best's formula reduces tension and anxiety resulting from stressful activities and from high-decibel noises like thunderstorms and fireworks. Comfort Calm promotes relaxation without drowsiness through natural ingredients like tryptophan, valerian root, and chamomile.