L Carnitine: Unveiling the Science Behind its Role in Effective Weight Loss Aesthetics 360 Lash & MedSpa Acetyl L Carnitine and Erectile Dysfunction NIH Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications When to take L carnitine: Dosage, forms, and side effects 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 l carnitine: Nutrition, pathology, and health benefits ScienceDirect