Integrative Management of ADHD: What the Evidence Suggests Psychiatric Times In the double blind, placebo controlled, double crossover trial published in Prostaglandins, Leukotrienes & Essential Fatty Acids, boys diagnosed with ADHD were given acetyl L carnitine at 100 mg per kg of body weight per day, divided L CARNITINE increases muscle mass, reduces fat mass. Bangkok Hospital Headquarter FocusNeeds