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 diagnosed with Chronic acetyl L carnitine treatment alleviates behavioral deficits and neuroinflammation through enhancing microbiota derived SCFA in valproate model of autism ScienceDirect Frontiers A molecular framework for autistic experiences: Mitochondrial allostatic load as a mediator between autism and psychopathology L Carnitine CAM Cancer Can Lcarnitine be used as a treatment for a child with autism spectrum disorder (especially if a metabolic or mitochondrial abnormality is suspected), and what dosing and safety monitoring are recommended?