Pet MD Calming Hemp Soft Chews for Dogs are for the use in dogs over the age of 12 weeks. Veterinarian formulated calming chews contain Chamomile, Thiamine, L-Tryptophan, Melatonin, and Hemp Seed to help your dog relax in a stressful and uncomfortable situation. To complete this synergistic blend of ingredients is Ginger to help support sensitive stomachs, which is especially helpful while traveling.