Solliquin Chewable Tablets for Medium to Large Dogs, 45 Tablets L-theanine: An amino acid found naturally in green tea. It directly stimulates the production of alpha brain waves, which create a state of deep relaxation, wakefulness, and mental awareness Magnolia / Phellodendron: The combination of Magnolia and Phellodendron extracts appears to be synergistic, with the combination controlling stress and anxiety more effectively than either compound used alone. Whey Protein Concentrate: Contains NMXSLQ05, a trademarked high quality protein source which supplements ten essential amino acids including the precursors of glutathione and serotonin.