Amazon.com: Natures Craft Cleansing Herbal Liver Detox Gummies Liver Support Milk Thistle Gummies with Artichoke Extract Turmeric Curcumin and L Carnitine Vegan and Non GMO Sweet Lemon (30 Servings) : Everything Else When to take L carnitine: Dosage, forms, and side effects Quercetin inhibits hepatotoxic effects by reducing trimethylamine N oxide formation in C57BL 6J mice fed with a high l carnitine diet Food & Function (RSC Publishing) L carnitine promotes liver regeneration after hepatectomy by enhancing lipid metabolism Journal of Translational Medicine Springer Nature Link Frontiers Role of Carnitine in Non alcoholic Fatty Liver Disease and Other Related Diseases: An Update L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy.