Counterintuitively, however, the same precautionary principle has not been applied to PAC itself, and the risks of developing severe COVID-19 associated to the reduction of GSH might be far higher than the benefits derived from discouraging the use of NSAIDs or steroids
Glutathione IM injections
For hair regrowth specifically, most research and clinical protocols use GHK-Cu
Reviews flag this as an unresolved question, especially in patients with current or prior cancer (Sehgal et al., Pharmaceuticals, 2025)
Some healthcare providers have prescribed BPC-157 through compounding pharmacies, though the FDA has increased scrutiny of compounded peptides in recent years and regulations continue to evolve
In recent years, it has been discovered that administering glutathione in serum form further enhances the health benefits of this molecule