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Currently, no company worldwide has completed the required oral toxicity studies, metabolism studies, and long-term safety evaluations for GHK-Cu and submitted a GRAS notification to the FDA
The Arrhenius equation governing reaction rates shows that every 10C increase in storage temperature roughly doubles the degradation ratemeaning a serum left on a bathroom counter at 30C degrades four times faster than one refrigerated at 4C
PMID 39373298
It suggests that extracellular glutamate leads to deprivation of cystine and its reduced form cysteine, which is the rate-limiting substrate for the synthesis of glutathione
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