functional groups for glutathione Homeostasis and Functions: Potential Targets Medical Interventions Table 1 from Effects of
Description
The peptide requires refrigeration, and prolonged exposure to freezing temperatures (as might occur during winter shipping) can damage reconstituted product

The lancet 344 :796-798,1994 Wefers H

If you look at availability in the NAC vs glutathione choice, glutathione does come out on top

Eur J Prev Cardiol 26(2_suppl):2532
e-Pub 1990

Abstract A substantial proportion of patients with Hashimotos thyroiditis (HT) continue to experience persistent symptoms despite achieving biochemical euthyroidism, either with or without levothyroxine (LT4) replacement therapy
