how does nac convert to glutathione N-acetylcysteine (NAC): from Clinical Anti-Aging Who should or shouldn't take
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Berger C, Goltzman D, Langsetmo L, Joseph L, Jackson S, Kreiger N, et al
[DOI] [PMC free article] [PubMed] [Google Scholar] 305

You need to know what realistic results you can expect and how long they take

The authors reported a significant difference between urinary phenol levels in a group exposed to 10 p.p.m
