We’ve previously written on numerous occasions about the benefits of vitamin D and its significance in maintaining a healthy immune system. In cases of a multiple sclerosis (MS) relapse we almost always see low levels of D well below the recommended 60-80 ng/ml (nanograms per milliliter). 

A small clinical study has reported primary findings that treatment for two months with N-acetylcysteine (NAC), which is a natural molecule that enhances the levels of antioxidants, significantly improved metabolic activity in certain brain regions among people with multiple sclerosis (MS).
NAC is the N-acetyl derivative of the naturally occurring amino acid, L-cysteine, and studies have suggested that it helps increase glutathione levels in the body and brain. If these levels are depleted it contributes to more oxidative stress that occurs with disease processes in MS, which can then disrupt the blood-brain barrier (BBB) and result in neuronal and axonal injury.