Casein & Gluten Free Ultra Tested Tested for More Than 950 Contaminants! Heavy Metals · Bacteria · Yeast · Mold · Pesticides & More... Hypoallergenic Dietary Supplement Protects the body from free radicals. Hypoallergenic. Gluten and casein free. Capsules are plant based. Ultra Tested. L-Taurine (Taurine) plays a calming role as a neurotransmitter by counteracting the stimulatory effect of glutamate. L-Taurine also has a very important antioxidant activity function in white blood cells, leukocytes and lymphocytes. These cells are important in protecting the body from foreign substances and invading organisms. The formation of taurocholic acid, a key component of bile, requires L-Taurine. Bile allows for the absorption of the fat-soluble vitamins A, D, E and K, as well as essential fatty acids. Kirkman's L-Taurine is made from L-Taurine of exceptional quality and purity.