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 neuro-transmitter for brain and nerve cell function.

It supports cellular energy production by assisting in the transport of fat into the mitochondria where it is oxidized and converted into ATP (chemical energy for the cell). Acetyl L-Carnitine is a highly bioavailable form of L-Carnitine that can cross the blood-brain barrier, where it exerts an antioxidant effect, helps to maintain healthy cellular energy metabolism and supports brain function.

Articles:

http://ajpheart.physiology.org/cgi/pmidlookup?view=long&pmid=11557544

http://en.wikipedia.org/wiki/Acetyl-L-carnitine