Meta analysis claims effectiveness of multi nutrient supplements in treating ADHD, but reports inconsistent results and has methodological shortcomings 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 500mg ml 50ml vial Savage Supplements L Carnitine 3000 Liquid Acetyl carnitine improves hyperactivity and learning deficits in KAT6A haploinsufficient mice Life Science Alliance