Here's an interesting paper on lipoic acid. Although it's not MS (Parkinson's Disease), R-lipoic acid combined with acetyl-L-carnitine was found to be 100 to 1000 more effective than either alone in protecting mitochondria in a cellular Parkinson's Disease model.
Combined R-alpha-lipoic acid and acetyl-L-carnitine exerts efficient preventative effects in a cellular model of Parkinson's disease.
J Cell Mol Med. 2008 Jun 20.
Mitochondrial dysfunction and oxidative damage are highly involved in the pathogenesis of Parkinson's ...