how often should i take ghk cu GHK-Cu Dosage and Protocol: A Medical Provider's Guide to the 30-Day Cycle GHK-Cu Copper Peptide Supplement, Anti-Aging
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By preserving crucial NAD+ levels, it encourages your body to burn stored fat for fuel

Bioactive peptides: synthesis, sources, applications, and proposed mechanisms of action

Journal of Sleep Research, 2(2), 6369
In some specific protocols, yes, but physiological saline (0.9% NaCl) contains no preservative, so it has shorter solution stability, similar to sterile water
