The adverse effects of long term l carnitine supplementation on liver and kidney function in rats L Liu, D M Zhang, M X Wang, C Y Fan, F Zhou, S J Wang, L D Kong, 2015 Acetyl L Carnitine Allergy: Symptoms and Treatment Options (2026) Wyndly 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 When to take L carnitine: Dosage, forms, and side effects Acetyl L Carnitine and Erectile Dysfunction: What the Evidence Shows