GHK has a higher affinity for Cu than serum albumin does, so it effectively pulls copper off albumin and hands it to cellular copper chaperones and cuproenzymes lysyl oxidase, superoxide dismutase, cytochrome c oxidase that run ECM crosslinking, redox defense, and mitochondrial respiration
Sci China Chem
Background investigations and polygraph examinations for security clearances may ask about prescription medication use, particularly medications that could affect cognitive function or create foreign targeting risks
Back of the upper arm
In many cases, yes, especially if you have gut absorption issues (e.g., IBS, low stomach acid, post-surgery) or if youre already depleted
Notice how the number of available doses from a single 5mg vial decreases dramatically as the dose increases