Vet's Best Comfort Calm, 30 Chewable Tablets 2-Pack Vet's Best Comfort Calm supplement for dogs helps ease and reduce anxiety and tension from everyday stresses Vet's Best calming aid for dogs use key natural ingredients (tryptophan and valerian root) helps your pet calm and relaxed Perfect large breed dogs and small breed dogs 10 months and older Give to your dog 1 hour before a stressful event, and can be given every 6 to 8 hours as needed (follow supplement directions) 2 Packs of 30 chewable tablets; National Animal Supplement Council (NASC) Seal of Approval