Low Bioavailability and High TMAO Production: Novel Insights Into Acetylcarnitine and Carnitine Metabolism KrimsDavis 2025 Molecular Nutrition & Food Research Wiley Online Library Full article: Gut microbiota derived TMAO drives the kidney bone vascular axis in chronic kidney disease complications Full article: Trimethylamine N Oxide (TMAO) in Seafoods: Shared Mechanisms Between Fish and Humans for Forming Gut Microbial TMAO: Overview of Animal TMAO Yield Potential Scientists make breakthrough in studying the enzyme involved in fish odor syndrome 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.