l carnitine, a friend or foe for cardiovascular disease? A Mendelian randomization study BMC Medicine Springer Nature Link Is L carnitine harmful to the skin? Typology Carnitine and Acylcarnitine Analysis Service LCMS MS Quantification Creative Proteomics Studies that examine the effects of L carnitine on performance Download Table 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. Abstract