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 Acetyl L Carnitine 1000mg Acetyl L Carnitine 500 mg PDF) Acetyl L Carnitine (ALC) in Attention Deficit Hyperactivity Disorder: A Multi Site, Placebo Controlled Pilot Trial