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While it may not be completely inert, its potency will be severely compromised and unpredictable

Tricyclic aromatics, which are inhibitors of Plasmodium falciparum growth and human GR [40,41], were inactive as inhibitors of TGR

Measuring red blood cell PLP can be more reliable in this setting, but it's not widely available

GHK-Cu adds another layer of concern because FDA has specifically discussed immunogenicity risk for injectable GHK-Cu related to potential aggregation and peptide-related impurities

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However, the study did not look at the impact of glutathione supplements or examine the use of glutathione on eczema symptoms