Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine Trimethylamine and Trimethylamine N Oxide, a Flavin Containing Monooxygenase 3 (FMO3) Mediated Host Microbiome Metabolic Axis Implicated in Health and Disease Drug Metabolism and Disposition Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications TMAO: how gut microbiota contributes to heart failure Translational Research Trimethylamine N Oxide (TMAO) as a Biomarker Springer Nature Link Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis