Potential Adverse Effects of L Carnitine Marnys 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 CARNITINE increases muscle mass, reduces fat mass. Bangkok Hospital Headquarter Carnitine: Health Benefits, Supplement Uses, Side Effects, Daily Intake L Carnitine Linus Pauling Institute Oregon State University Potential Inhibitory Effects of l Carnitine Supplementation on Tissue Advanced Glycation End Products in Patients with Hemodialysis Kei Fukami, Sho ichi Yamagishi, Kazuko Sakai, Yusuke Kaida, Takeki Adachi, Ryotaro Ando, Seiya Okuda, 2013