The Mighty Calm Stress and Behavior Health Supplement for Dogs is a melatonin-based soft chew designed for both adult and puppy dogs of all breeds. With a formulation specifically for calming purposes, this supplement comes in a pack of 120 units and has an expiration date of 01/2029. Made in the United States by the brand MightyPaw, this supplement is suitable for small, medium, and large dogs, providing a natural and effective way to help dogs manage stress and improve behavior.