From the makers of vet recommended GREENIES Dental Treats, you can provide calming support to your furry friend with GREENIES Calming Supplements. These supplements are formulated with L-Tryptophan and L-Theanine to support calmness and relaxation as well as support positive behavior during times of normal and occasional stress. GREENIES Calming Supplements are also crafted with real chicken for irresistible taste and no artificial flavors, preservatives, or colors*. Made in the USA with quality ingredients from around the world, formulated by a team of PH.D animal nutritionists, and contains the National Animal Supplement Council Quality Seal, you can be sure you're giving your canine companion a quality supplement they will love. (*Trace amounts may be present due to potential cross-contact during manufacturing)