Origin, fate and implication of trimethylamine TMA and trimethylamine Download Scientific Diagram Frontiers Role of Carnitine in Non alcoholic Fatty Liver Disease and Other Related Diseases: An Update The effect of l carnitine supplementation on mortality and clinical outcomes in ventilator dependent critically ill patients with obesity and COVID 19: Protocol for a randomized double blind placebo controlled trial ScienceDirect 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.