* Science-Based Nutrition.* Biosint Carnitines.* HCI Featuring Sigma tau Carnitine.* Enhances Alertness & Mental Focus.* Dietary Supplement.Acetyl-L-Carnitine (ALC) is a naturally occurring form of L-Carnitine, a vitamin-like nutrient synthesized in the body, from the amino acids lysine and methionine. ALC plays a key role in the production of acetylcholine, an important neurotransmitter for brain and nerve cell function.The Sigma tau supplied Acetyl-L-Carnitine in this product is derived from a base of pharmaceutical grade L-Carnitine manufactured by patented, FDA-approved process that fully complies with the USP 25, FCC 4 and EU monographs. It is GMO-free, pesticide-free and BSE safe.* Supports energy metabolism in the brain.* Keeps nerves healthy and in repair.* Decreases free radical production in the brain.Other Ingredients:Stearic acid, cellulose, magnesium silicate, silicon dioxide, gelatin capsule.Contains nothing other than listed ingredients.