Dietary supplementation of l carnitine ameliorates metabolic syndrome independent of trimethylamine N oxide produced by gut microbes in high fat diet induced obese mice Food & Function (RSC Publishing) Frontiers Association between fatigue, peripheral serotonin, and L carnitine in hypothyroidism and in chronic fatigue syndrome Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect JCI l Carnitine in omnivorous diets induces an atherogenic gut microbial pathway in humans Long Term Changes in Gut Microbial Metabolite Trimethylamine N Oxide and Coronary Heart Disease Risk JACC