Acetyl L-CarnitineMax Muscle Acetyl L Carnitine 2000mg is a naturally occurring amino acid that is helps in energy production within human body, it helps to transport fatty acids into the mitochondria "the energy producing structures inside cells" where they can be used as a fuel source. Acetyl L Carnitine is a modified form of L carnitine, with an acetyl group attached to it. This modification allows it to cross the blood brain barrier easier than L carnitine, which