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First, much of the available literature concerns classic BPC-157, not the variant ARG from a specific commercial product

Glutathione is naturally present in every cell and is required for normal cellular function

This may indicate that there is a stronger connection between CFS and chronic infections, or simply that not enough research on the connection between chronic infections and fibromyalgia has been done yet

PMID: 37717940

Serial measurements over time, ideally taken under consistent conditions (same time of day, same fasting state, same exercise window), give a much more meaningful picture

4e), both of which are major components of activity-regulated Bdnf transcription in neurons 23,24