| Acetyl L-Carnitine (ALCAR, Acetylcarnitine) is a derivative of the athletic performance supplement Carnitine. Despite their similar names and chemical structures, there is actually a very different mechanism of action for Acetyl L-Carnitine. This acetylated version of Carnitine offers more mental rather than physical benefits because it is able to cross the blood-brain barrier. Its primary effect is on the production of acetylcholine which is one of the ma |