Valerian is a natural sedative which can reduce pain, muscle spasms and palpitations. For centuries, it has been used for its tranquilzing effects, and in small, frequent doses can help calm a panic stricken or anxious dog. Recommend during high stress inducing periods such as July fireworks or a visit to the vet. Rememeber, dossage does matter. Please consult with a holistic vet prior to administering or do additional research for the safety and well being of your dog.