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. This extremely powerful antioxidant has a potent neutralising effect on cell damaging free radicals that circulate the body. Cell damage by free radicals is said to contribute significantly to chronic illness and the aging process.
A form of carnitine produced naturally in the brain that increases the memory-enhancing brain chemicals is acetyl-L-carnitine.
In an article by James Chapman - Science correspondent of the Daily Mail, it was revealed that supplementation with a combination of alpha-lipoic acid, and acetyle l-carnitine can reduced oxidative stress and these two products might provide help against ageing and may improve long-term memory.