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 Natural Factors RegenerLife Acetyl L Carnitine 500mg The Vitamin Shop Acetyl L Carnitine & Reviews Thorne Acetyl L Carnitine 500 mg Supplement Energy, Cognitive Support A 1 year multicenter placebo controlled study of acetyl L carnitine in patients with Alzheimer's disease Neurology