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When reconstituted with bacteriostatic water and stored properly in the refrigerator (2-8C), GHK-Cu solution is stable for several weeks
some peptide-industry sources report a Pharmacy Compounding Advisory Committee review was scheduled for July 2026 that could revisit this status, but that outcome had not been independently confirmed as of this writing
Phase I Safety Profile: While topical and low-dose injectable formulations demonstrate high tolerance and minimal systemic toxicity, there is no formal Phase I safety data for chronic 85 mg/day intranasal delivery in humans
Bessesen DH, Van Gaal LF
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