L Carnitine Research Grade 99% Nationwide Peptides 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 L Carnitine Linus Pauling Institute Oregon State University 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 L Theanine Vs L Carnitine: Can We Combine Them? Vinatura Supplements L Carnitine Linus Pauling Institute Oregon State University