JCI l Carnitine in omnivorous diets induces an atherogenic gut microbial pathway in humans L Carnitine Pills for Weight Loss: Evidence, Safety and UK Guidance Bolt Pharmacy 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) Pharmacokinetics of L Carnitine : Clinical Pharmacokinetics Did You Know? Some people report a fishy smell after supplementing with L carnitine. This happens because certain gut bacteria convert carnitine to trimethylamine, a malodorous compound found in rotting fish. Effect of dietary fiber on trimethylamine N oxide production after beef consumption and on gut microbiota: MEATMARK a randomized cross over study European Journal of Clinical Nutrition