Identification of TMAO producer phenotype and hostdietgut dysbiosis by carnitine challenge test in human and germ free mice Gut Oolong Tea Extract and Citrus Peel Polymethoxyflavones Reduce Transformation of l Carnitine to Trimethylamine N Oxide and Decrease Vascular Inflammation in l Carnitine Feeding Mice Journal of Agricultural and Food Chemistry Full article: Gutheart axis: emerging therapies targeting trimethylamine N oxide production Full article: Gut microbes with the gbu genes determine TMAO production from L carnitine intake and serve as a biomarker for precision nutrition Gut Microbiota Derived TMAO: A Causal Factor Promoting Atherosclerotic Cardiovascular Disease? TMAO and Heart Disease A Serious Heart Marker Functional Medicine University The Leader in Online Training in Functional Diagnostic Medicine