Patent ID: 8071610

Claim:
A method of assisting enhancement of cognitive function in a person using a nutritional supplement, comprising: providing a composition that includes huperzine A, vinpocetine, and acetyl-L-carnitine in a ratio of x:y:z, wherein x is between 0.8 and 1.2, y is between 80 and 120, and z is between 8,000 and 12,000, and further providing an optional additional ingredient; formulating the supplement for oral administration such that the huperzine A, vinpocetine, and acetyl-L-carnitine together account for at least 80 wt % of a dosage unit of the supplement; and obtaining data in a clinical trial that establishes that the quantities and ratios of huperzine A, vinpocetine, and acetyl-L-carnitine in the supplement are effective to improve cognitive function.