Biomedical Reports Early research into L carnitine was often cited as underwhelming, showing negligible changes in muscle carnitine content and fat loss outcomes. However, these findings may have been limited by a short study window Frontiers Role of Carnitine in Non alcoholic Fatty Liver Disease and Other Related Diseases: An Update Carnitine metabolism in the human gut: characterization of the two component carnitine monooxygenase CntAB from Acinetobacter baumannii Journal of Biological Chemistry