I was told once by an experienced pharmacologist turned naturopath that there is conflicting research about N-acetyl-cysteine and that some findings suggest it can be a bit dangerous eg carries mercury INTO the brain, so I would use caution with this supplement.
Anne
BTW Invincible, did you have another pascalite footbath?? If you order it again ask Sandi to put it in a flat envelope and the shipping will cost only $9 for global priority!!