We can tell you about the clinical research behind Acetyl L Carnitine and Alpha GPC all day. (And we often do!) But sometimes, the best way to understand what SmartBRAIN can do for your GNC Acetyl L Carnitine Alpha Lipoic Acid: Mood Support Supplement GNC Better brain function rarely comes from pushing harder It usually comes from supporting the systems your brain already relies on. Clear thinking depends on a few fundamentals working together. Energy availability Alpha GPC Complex myinnatevitality