L Carnitine in the Treatment of Psychiatric and Neurological Manifestations: A Systematic Review Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link L Carnitine: What it's used for, benefits and how to take it correctly Justloading L Carnitine for Erectile Dysfunction: What the Evidence Shows and How to Use It 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. Revisiting the Role of Carnitine in Heart Disease Through the Lens of the Gut Microbiota