Modified compositions and methods for enhancing brain function

Compositions and methods are provided that enhance cognition in a human to which the composition is orally administered. Clinical studies have proven that contemplated compositions achieve specific improvements in cognition using a modified nootropic formulation having six active ingredients at or near threshold active dosages. Most preferably, the active ingredients are huperzine A, vinpocetine, acetyl-L-carnitine, alpha lipoic acid, rhodiola, and biotin at typically less than 2300 mg per daily dosage.