Its already known that glutathione is difficult to absorb
So when most people say lip freckle, what they actually have is a labial melanotic macule
Daily vitamin B12 turnover rate is about 2 g/day, so an oral dose of 100250 g/day is sufficient for normal patients
That does not mean every reaction is dangerous, but it does mean injectable quality and medical oversight matter
Most recently, a study reported that Lingonberry (Vaccinium vitis-idaea L.) which is rich in ACN could improve NAFLD by reducing hepatic lipid accumulation, oxidative stress and inflammatory response, and might be mediated through the biosynthesis restoration of Nrf2 and glutathione (Hewage et al., 2021)
(PubMed) Golzarand M, Mirmiran P, Azizi F