Acetyl-L-Carnitine (ALCAR) is involved in brain energy production as a source of Acetyl Coenzyme A which is used in energy-yielding processes inside the mitochondria of the brain. ALCAR is also used for the biosynthesis of neurotransmitters like glutamate, aspartate, GABA and acetylcholine, a neurotransmitter that is essential to the processes of learning and concentration.