Optimizing endurance performance in elite swimmers: effects of L carnitine supplementation and hydration strategies Applied Water Science Springer Nature Link Can Acetyl L Carnitine Help Clear Brain Fog and Fatigue in Long COVID and ME CFS? RTHM Acetyl L Carnitine: Benefits, Forms, Dosing, and Side Effects Dr Brad Stanfield Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications Breakthrough in studying the enzyme that ultimately produces fish odor syndrome EurekAlert! 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.