TMAO: how gut microbiota contributes to heart failure Translational Research 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. Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine Gut Derived Metabolite, Trimethylamine N oxide (TMAO) in Cardio Metabolic Diseases: Detection, Mechanism, and Potential Therapeutics Frontiers A mixture of postbiotics tyndallized probiotics reduces trimethylamine (TMA) in trimethylaminuria models: Evidence from in vitro and in vivo studies