Page 1 Reviews The Vitamin Shoppe, Acetyl L Carnitine , 500 mg , 240 Capsules iHerb Fish Odor Carnitine TikTok L Carnitine (Orange) Outlastlabz How Much L Carnitine Per Day: Expert Guide The Science of Good Health L carnitine supplements can cause a fishy odor in the breath, sweat, and urine. This is likely due to the formation of trimethylamine (TMA). TMA is also responsible for the pungent smell of The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation