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Lots of publications is not the same as evidence. 2

A: No, it should only be used under medical supervision as it is an injectable medication

the present studies additionally investigated the correlation between behavioral improvements and changes in glutathione intracellular concentrations

If your creatinine has risen after starting a glutathione supplement, the far more likely explanation is dehydration, a concurrently started supplement (creatine monohydrate being the most common culprit), an NSAID, or an underlying kidney issue that needs medical evaluation not the glutathione itself

Many drugs including anti-inflammatory medications can also deplete vitamin C, iron, and folate, which can lead to bleeding gums, interrupted dentin formation, and mouth ulcer formation