l Carnitine and Acetyl l carnitine Roles and Neuroprotection in Developing Brain Neurochemical Research Springer Nature Link Researchers study possible carnitine deficiency, autism link L Carnitine Healthy According to a randomized, double blind, placebo controlled clinical trial published in Elsevier journal Research in Autism Spectrum Disorders (2013), l carnitine supplementation demonstrated a significant therapeutic benefit in children Medical treatment of autism spectrum disorder in children: Current evidence, controversies, and clinical challenges