Biomedical Therapy for Autism Psychiatry Advisor Frontiers Discovery and validation of acetyl L carnitine in serum for diagnosis of major depressive disorder and remission status through metabolomic approach Your body already makes L Carnitine, so why do people take it as a supplement? Because while it helps burn fat for energy, it only works when paired with the right lifestyle., So before you jump on Acetyl L Carnitine, 60 Vegan Capsules (500 mg per Capsule)