Kala Health Calmix for Dogs & Cats, 45 Chewable Calming Tablets. Contains L-Theanine (Suntheanine), Valerian Powder & Taurine, Helps Pets Cope with Separation Anxiety, Loud Noises, Fireworks & Thunder L-Theanine. This natural amino acid L-Theanine is commonly found in Green Tea and is clinically proven to promote relaxation; reduce stress & anxiety in pets, and improve learning ability. Vitamin B6. Part of the B-complex vitamins, inositol has a prominent calming effect on the central nervous system. Valerian Root. Valerian root has been used as a sleep aid for over 1,000 years. Its ability to help relax the central nervous system, promote feelings of calm, decrease levels of anxiety and stress. Taurine. This amino acid plays a major role in the brain as an "inhibitory" or calming neurotransmitter. Increase their resistance