US$ 28.54
what is l in l-glutathione reduced - CAS-Number 70-18-8 Chemical structure of L-glutathione. Elaborated
Description
doi: 10.1007/s13340-018-0347-1 71 Westwell-RoperCYEhsesJAVerchereCB

And the price 330 puts it comfortably below most comparable options that charge 2x to 3x for similar or weaker formulas

These figures are illustrative for a research blend, not approved human dosing
Slit lamp bio-microscopy examination

Another point to consider is the scent of NAC
