alpha glutathione s transferase GST family and cellular localization of its isoenzymes Glutathione S-transferase A1 - Wikipedia

A., Oudshoorn, A., & Ketting, D

The same 2017 study referenced above reported the following side effects in some participants who received 250mg of oral glutathione:6 Pruritis (itching) Macular erythema (rash-like red patches on the skin) Red spots on the skin Tiredness Transaminitis (high liver enzyme levels in the blood) Additionally, specific glutathione supplements may pose more safety concerns than others

Koetje JH, Oor JE, Roks DJ, Van Westreenen HL, Hazebroek EJ, Nieuwenhuijs VB

While you can supplement with a bit more than this (many supplements have 15 to 30 mg), you should not exceed the tolerable upper intake of 40 mg per day from food and supplements combined, unless supervised by a doctor

Lipids 1862 , 11461154 (2017)

By focusing on a "food-first" approach and choosing high-bioavailability supplements when needed, you can support your body through this incredible transformation