Frontiers Discovery and validation of acetyl L carnitine in serum for diagnosis of major depressive disorder and remission status through metabolomic approach L Carnitine, 500 mg, 30 vegetarian capsules Life Extension Liquid L Carnitine Energy, Metabolism & Fat Burning L Carnitine 3000 Liquid Lets talk about L Carnitine, If youre in the gym community, youve probably heard of L Carnitine but what actually is it?, L Carnitine is a naturally occurring compound that plays a role in helping