L carnitine: which skincare actives to pair it with? Typology L Carnitine Explained: The Essential Guide to Energy, Metabolism, and Everyday Vitality Audiobook by Dr. Alexander Montrose A 2016 study suggested L carnitine could drop a key cardiovascular risk marker by up to 12%, which sounded promising at first., But follow up research told a more complicated story, with inconsistent JYM L Carnitine L Tartrate