Trimethylamine N oxide, choline and its metabolites are associated with the risk of non alcoholic fatty liver disease British Journal of Nutrition Cambridge Core l carnitine Walgreens Higher Carnitine Levels are Associated with Subsequent Myocardial Infarctions in HIV Higher Carnitine Tied to Almost Quintupled MI Risk in People With HIV Gut microbe derived metabolite trimethylamine N oxide activates the cardiac autonomic nervous system and facilitates ischemia induced ventricular arrhythmia via two different pathways eBioMedicine