is nac a precursor to glutathione biosynthetic scheme. N-acetyl-L-cysteine (NAC) can supply N-Acetyl Cysteine (Glutathione Precursor)
Description
The healing peptides, however, benefit from periodic breaks

doi: 10.1016/j.juro.2010.02.007

And I think that

Can glutathione be harmful to the kidneys
