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 Dopamine Boost PYM Better sleep, calmer mind, sharper focus can L theanine really deliver it all? L theanine appears to promote relaxation without sedation, and in some contexts, may also improve aspects of cognitive performance. Unlike many Amazon.com: NATURAL STACKS Dopamine & Acetylcholine Brain Food Bundle Supports Mental Drive and Cognitive Function* 120 Total Capsules : Health & Household Allergy Research Group , Acetyl L Carnitine 500 mg 100 Capsules PDF) Neuroprotective Action of Acetyl L Carnitine on Methamphetamine Induced Dopamine Release