Support a sense of calmness and relaxation in your furbaby with the Greenies Calming Chicken Flavored Soft Chew Calming Supplement for Dogs. This supplement is formulated with L-tryptophan and L-theanine to provide calming support and promote paws-itive behavior during times of normal and occasional stress. Real chicken provides a paw-some taste, and these treats are free of artificial flavors, preservatives, and colors.