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. Acetyl L Carnitine: Benefits, Forms, Dosing, and Side Effects Dr Brad Stanfield 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. Does L carnitine cause fishy body odor? Surprising Truth and Solutions Tonum Carnitine Rich Foods: Understanding L Carnitine and Its Benefits Loyal Optimizing endurance performance in elite swimmers: effects of L carnitine supplementation and hydration strategies Applied Water Science Springer Nature Link