View All Ingredients L-Carnitine AboutAcetyl-L-Carnitine is an amino acid that naturally occurs in the body. It’s responsible for energy production and supporting healthy functions of the brain, muscles, and heart. FormAcetyl-L-Carnitine Country of OriginChina Other NamesAcetyl-L-Carnitine Natural SourcesRed Meat, Beans, Dairy Products