SLC25A39 is necessary for mitochondrial glutathione import in mammalian cells Nature Glutathione is nicknamed the master antioxidant because it is the most abundant, body produced (endogenous) antioxidant found in every cell, essential for neutralizing free radicals, recycling other antioxidants (like Vitamin C and E), Bio based glutathione production: Microbial strategies and challenges ScienceDirect Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic