(Tomlyn) Relax & Calm Chews for Medium and Large Dogs support balanced behavior and relaxation and reduce hyperactivity. May provide benefit during times of stress including travel, separation, storms, and loud noises. Formulated with l-tryptophan, chamomile, and ginger for natural supplementation. Give dogs 1 chew per 20 lbs. body weight daily. Safe use in pregnant animals or animals intended for breeding has not been proven.