The effects of l carnitine supplementation on inflammatory factors, oxidative stress, and clinical outcomes in patients with sepsis admitted to the intensive care unit (ICU): study protocol for a double blind, randomized, placebo controlled 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. HOW TO REMOVE THE FISHY SMELL AND TASTE FROM FISH Easy 2 Step Method iSatori Liquid L Carnitine LS3 3000 How to Remove a Fishy Smell and Stains From Clothing