l glutathione safe for breastfeeding L-Glutathione Antioxidant Support L-Glutathione (Reduced), 500 mg, 120
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[online] Available at: [Accessed 30 Aug

Meier J, Hofferber M, A Stapleton E, Iverson JM N (2019) Hydrogen peroxide sensors for biomedical applications

It is that powerful because its by far the most abundant antioxidant produced by the human body

10.1371/journal.pone.0279591