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Exposure Risks: Both are research compounds with no approved safety profiles for human exposure

The risks of injecting unlicensed, often poorly manufactured compounds are real and not adequately offset by the potential benefits, particularly when well-evidenced alternatives are available

Subcutaneous injection represents the most practical administration route for self-administration, offering good bioavailability with minimal technical complexity

This is the route used in every animal study demonstrating GHK-Cu's effects beyond the skin

Wan Q, Huang B, Li T, et al

[DOI] [PMC free article] [PubMed] [Google Scholar] 353.Cheyuo C., Aziz M., Wang P