What is "acetylcarnitine"

n. A dietary supplement derived from carnitine.

Acetyl-L-carnitine, ALCAR or ALC, is an acetylated form of L- carnitine. It is naturally produced by the body, although it is often taken as a dietary supplement. Acetylcarnitine is broken down in the blood by plasma esterases to carnitine which is used by the body to transport fatty acids into the mitochondria for breakdown.