Need a calming aid for your dog during stressful times, such as the vet’s office, fireworks shows, or thunderstorms? Vet’s Best Comfort Calm chewable tablets are made with quality, naturally derived ingredients (tryptophan and valerian root) to help calm and relax your dog. Safe for any breed dog aged 10 months or older when used as directed. Veterinarian formulated for best absorption and digestion, made in the USA, and carries the National Animal Supplement Council Seal of Approval.