Alpha lipoic acid can cross the blood-brain barrier, a wall of tiny vessels and structural cells, and pass easily into the brain. It is thought to protect brain and nerve tissue by preventing free radical damage. As an antioxidant, alpha lipoic acid can neutralize free radicals which can damage cells. Free radical damage is thought to contribute to aging and chronic illness.

A form of carnitine that is produced naturally in the brain and increases memory-enhancing brain chemicals--acetyl-L-carnitine.

In an article by James Chapman - Science correspondent of the Daily Mail,
it was revealed that these two products might provide the cure against ageing.