I'd urge some caution about N-A-G...
We've discussed this supplement on the boards before. I had my husband on it (dx MS 3/07), until learning that this supplement is a precursor to hyaluronic acid production- he stopped taking it-
Hyaluronic acid prevents oligodendrocytes from repairing the damaged myelin I was of the impression people with MS may not want more hyaluronic acid. So, I think it's hard to determine if N-A-G might or might not be a good thing.
Please read our thread. Whatever you decide, I wish you health and answers in your search-