Taurine is a sulfur-containing amino acid that acts as a neurotransmitter, has antioxidant properties and is needed for proper bilary function. Taurine is abundant in the tissues of the central nervous system and plays a calming role as a neurotransmitter by counteracting the stimulatory effect of glutamate. Taurine has a very important antioxidant function in white blood cells, leukocytes and lymphocytes. These cells are important in protecting the body from foreign substances and invading organisms. Taurine is needed to form a key component of bile, taurocholic acid. Proper bile formation is very necessary for the absorption of essential lipids from the digestive tract. Bile forms water-oil emulsions of dietary lipids, allowing for the absorption of the fat soluble vitamins, A, D, E, and K, as well as essential fatty acids. Taurine deficiency can be measured in the laboratory, often occurring when individuals are on a restricted diet. Kirkman's Taurine capsules are part of the hypoallergenic product line which contain no known allergens and are made with capsule shells made of plant cellulose (pine), instead of the traditional animal gelatin shell.