Most people talk about carnitine like it is one supplement. It is not. Acetyl L carnitine and L carnitine L tartrate do different jobs, and picking the wrong one for the wrong goal is where people 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 physical chemical, metabolic, and therapeutic properties: relevance for its mode of action in Alzheimer's disease and geriatric depression Molecular Psychiatry L CARNITINE 350 MG ( L CARNITINE ) 20 HARD GELATIN CAPSULES The intestinal microbial metabolite acetyl l carnitine improves gut inflammation and immune homeostasis via CADM2 ScienceDirect