Prothera-Klaire Labs Acetyl L-Carnitine 500 mg brain and nervous system support. Research on L-carnitine shows its role in maintaining brain and nerve funciton during aging. The acetyl group can serve as a metabolic source of acetylcholine, a brain neurotransmitter, while the L-carnitine component carries fatty acids into mitochondria of nerve, heart, and muscle cells for use in energy production. Other benefits are membrane stability, production of nerve growth factor, and cerebral blood flow. Provided in its stable, hydrochloride form. Recommended Use: 1 capsule, 1 to 3 times daily or as directed by a healthcare professional.