Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn Amazon.com: Acetyl L Carnitine 1,000mg Per Serving, 150 Capsules (ALCAR for Brain Function Support, Memory, Attention, and Stamina) Acetyl L Carnitine that is Third Party Tested by Double Wood : Everything Else L Carnitine: Benefits, side effects, and dosage 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 Doctor's Best Acetyl L Carnitine, 1000 mg Per Serving, 120 Veggie Caps