Acetyl L. Carnitine Supplement Metabolics Brain Health Are you having any troubles with memory or mental performance? If you are then come by and checkout these two products from Natural Factors and Life Seasons. The Acetyl L Carnitine is Amazon.com: The Vitamin Shoppe Brain Sharp with Acetyl L Carnitine, Phosphatidylserine Vitamins (90 Capsules) : Health & Household Acetyl L Carnitine HCL 500mg per serving 180 Capsules Country Life, Acetyl L Carnitine 500 mg, 120 Vegetarian Capsules