▶ GHK-CU · SUBTOPIC · DOSING LITERATURE
GHK-Cu Dosing Literature
For Laboratory Research Use Only. The content below describes dose ranges as reported in peer-reviewed publications. This page does not recommend any dose for human use. No clinical claim is made. Always consult the original source publication.
SCOPE OF THIS PAGE
This page documents the published-literature dose ranges that appear in trials and animal studies of GHK-Cu. Every dose mention is bound to a citation (author, year, PMID where available). The PEPPUDEX wiki phrases these as descriptive observations of the research record, not as instructions to the reader.
ROUTES OF ADMINISTRATION IN PUBLISHED RESEARCH
The published research record for GHK-Cu reports the following route(s) of administration: Topical (cosmetic), Subcutaneous (research), Intradermal (research). Route selection in a study reflects pharmacokinetic considerations specific to that protocol and is not a recommendation for any human use of GHK-Cu.
PHARMACOKINETIC HALF-LIFE
Published pharmacokinetic data report a half-life for GHK-Cu of approximately Short (minutes) in plasma; longer in tissue depots. Half-life is the kinetic parameter that frames the dosing rhythm chosen in trial design. It is a measurement, not a recommendation.
CITED DOSE RANGES IN THE LITERATURE
The peer-reviewed sources below report dose ranges, frequencies, and durations used in studies of GHK-Cu. Refer to the original publication for full protocol detail.
- Pickart L (2008) reports the GHK-Cu protocol used in The human tri-peptide GHK and tissue remodeling, published in J Biomater Sci Polym Ed. PMID 18644225. See the source for the protocol-level dose range, frequency, and duration. link
- Pickart L, Vasquez-Soltero JM, Margolina A (2012) reports the GHK-Cu protocol used in The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging, published in Oxid Med Cell Longev. PMID 22666519. See the source for the protocol-level dose range, frequency, and duration. link
- Pickart L, Margolina A (2018) reports the GHK-Cu protocol used in Regenerative and protective actions of the GHK-Cu peptide in the light of the new gene data, published in Int J Mol Sci. PMID 29986520. See the source for the protocol-level dose range, frequency, and duration. link
- Canapp SO Jr, et al. (2003) reports the GHK-Cu protocol used in The effect of topical tripeptide-copper complex on healing of ischemic open wounds, published in Vet Surg. PMID 14648531. See the source for the protocol-level dose range, frequency, and duration. link
DOSING Q+A FROM LITERATURE
The questions below summarise dosing-relevant entries from the literature record. Each answer is descriptive of published material and is not a recommendation.
▶ Is GHK-Cu FDA-approved?
Topical GHK-Cu is regulated as a cosmetic ingredient (no FDA premarket approval required for cosmetics). Injectable formulations are not FDA-approved for any human indication and are supplied as research-grade chemical reference compounds.
▶ What is the storage shelf-life of reconstituted GHK-Cu?
14 days at 2–8 °C protected from light. Copper-peptide complexes degrade faster than non-copper peptides in solution due to redox activity. The lyophilized cake is stable for 24+ months at 4 °C.
▶ Can GHK-Cu be injected?
GHK-Cu is supplied as a research-grade injectable reference compound. Community-reported research protocols (1–2 mg, 2–3× per week subcutaneously) are not validated by published clinical trials and are not recommendations from this wiki.
▶ Why is GHK-Cu blue?
The Cu²⁺ ion in the GHK-Cu complex has a characteristic d-d electronic absorption in the visible spectrum, producing the iconic cobalt-blue color of reconstituted GHK-Cu and the pale-blue lyophilized cake.
▶ How does GHK-Cu modulate gene expression?
Pickart's transcriptomic study (Vasquez-Soltero et al. 2015) reported modulation of multiple thousand genes in dermal fibroblasts at the dose tested. The 4,000-gene figure widely cited online comes from that specific in-vitro readout; magnitude varies by cell type, dose, and exposure window.
▶ GHK-Cu vs copper peptide creams · what's different?
Many over-the-counter 'copper peptide' products contain GHK-Cu or related copper-tripeptides at lower percentages. Research-grade GHK-Cu sold as lyophilized powder is the same molecule supplied at known purity for laboratory reconstitution to any desired concentration.
▶ Is GHK-Cu safe in pregnancy?
Not studied in pregnancy or lactation. Research-grade GHK-Cu is supplied for in-vitro use only; no human dose is recommended.
STORAGE OF THE REFERENCE COMPOUND
Lyophilized · 4 °C 24 months protected from light
Reconstituted · 2–8 °C, 14 days protected from light (faster degradation than non-copper peptides)
Storage conditions describe the stability of the research-grade reference material, not a dosing protocol.
RECONSTITUTION MATH (CALCULATOR)
The PEPPUDEX reconstitution calculator at /calculator returns volume-per-dose math given vial mg, BAC mL, and a target dose in mcg. The calculator performs arithmetic only. It does not recommend a dose. Any number entered by a researcher must come from their own protocol design or the cited literature.
REGULATORY CONTEXT
FDA · Topical GHK-Cu formulations are marketed as cosmetic ingredients under FDA cosmetic regulation (cosmetics generally do not require FDA premarket approval). Injectable forms are research-use only.
WADA · Not listed on the WADA Prohibited List (2026).
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▶ LAST UPDATED · 2026-05-19