L Carnitine: Benefits, Uses, and Side Effects Lifespan Research Institute Carnitine, Choline, Cancer, & Cholesterol: The TMAO Connection Ever heard of Fish Odor Syndrome? Its a rare condition where the body cant break down trimethylamine a compound found in foods like fish, eggs, and beans. This leads to a strong, fish like smell 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 Breakthrough in studying the enzyme that ultimately produces fish odour syndrome Emerging role of trimethylamine N oxide (TMAO) in colorectal cancer Applied Microbiology and Biotechnology Springer Nature Link