L-theanine – an amino acid located in tea and mushrooms known for its capacity to relieve tension, anxiety, and insomnia L-tryptophan – an amino acid located in beef, poultry, eggs, and dairy that’s important for creating protein as well as production of specific brain chemicals for example serotonin a : https://codyajqic.blogsumer.com/36791189/5-tips-about-calming-chews-for-dogs-petco-you-can-use-today