PDF) Risk assessment of "other substances" L Carnitine and L Carnitine L tartrate Opinion of the Panel on Food Additives, Flavourings, Processing Aids, Materials in Contact with Food and Cosmetics of the Norwegian Scientific Committee for Food Frontiers Gut microbiota dependant trimethylamine N oxide and hypertension Liquid L Carnitine 3000: Metabolism & Energy Support New study links L carnitine in red meat to heart disease Harvard Health