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

Some researchers prefer injecting closer to the affected area for BPC-157, such as the lower back subcutaneous tissue for lumbar issues

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

The lancet 344 :796-798,1994 Wefers H
