ALCAR Supplement for Cognitive Function and Stamina L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation Best Naturals Acetyl L Carnitine 500mg 120 Capsules Supports Brain Energy Metabolism, Cognitive Function & Memory USA Made Dietary Supplement Antioxidant Support Meet L Carnitine a naturally occurring amino acid that plays a key role in helping the body convert fat into usable energy. It works by transporting fatty acids into your cells to ALCAR Acetyl L Carnitine for Cognitive Support AOR Inc.