GHK-Cu (50 mg Vial) Dosage Protocol
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Quickstart Highlights
GHK-Cu (copper tripeptide-1) is a naturally occurring copper complex of the tripeptide glycyl-L-histidyl-L-lysine that declines with age and acts as a broad genomic repair signal, stimulating collagen synthesis, balancing matrix metalloproteinases, and suppressing inflammatory gene expression[1][2]. Research-grade GHK-Cu is used as a subcutaneous injectable solution for systemic and local repair applications.
- Reconstitute: Add 5.0 mL bacteriostatic water → 10.0 mg/mL concentration.
- Typical daily dose: 1–2 mg once daily (subcutaneous).
- Easy measuring: At 10.0 mg/mL, 1 unit = 0.01 mL ≈ 100 mcg on a U-100 insulin syringe.
- Storage: Lyophilized: freeze at −20 °C (−4 °F); after reconstitution, refrigerate at 2–8 °C (35.6–46.4 °F); use within 4 weeks.
Dosing & Reconstitution Guide
Educational guide for reconstitution and daily dosing
Standard Daily Protocol (5.0 mL = 10.0 mg/mL)
| Week(s) | Daily Dose (mcg / mg) | Units (per injection) (mL) |
|---|---|---|
| Weeks 1–2 (starting dose) | 1,000 mcg (1 mg) | 10 units (0.10 mL) |
| Weeks 3–4 (standard dose) | 2,000 mcg (2 mg) | 20 units (0.20 mL) |
Frequency: Inject once daily subcutaneously. Begin at the lower 1 mg dose for the first 1–2 weeks to assess tolerability, then advance to 2 mg daily if no adverse reactions are observed[3]. At 10.0 mg/mL, the 50 mg vial provides 25 days at 2 mg/day or a 50-day supply at 1 mg/day.
Reconstitution Steps
- Allow frozen vial to warm to room temperature (10–15 minutes).
- Draw 5.0 mL bacteriostatic water with a sterile syringe.
- Inject slowly down the vial wall to minimize foaming. Do not inject directly onto the lyophilized cake.
- Gently swirl or roll until fully dissolved—do not shake vigorously. Note: GHK-Cu solution will appear blue due to the copper chelation; this is normal.
- Label with reconstitution date and peptide name. Refrigerate at 2–8 °C, protected from light.
- Use within 4 weeks of reconstitution for optimal potency.
Supplies Needed
Plan based on a 4-week daily protocol at 2 mg/day (2,000 mcg).
- GHK-Cu Vials (50 mg each):
- 4 weeks at 2 mg/day (28 days): needs 56 mg → 2 vials
- 4 weeks at 1 mg/day: 1 vial
- Insulin Syringes (U-100, 0.3 mL / 30-unit preferred):
- 4 weeks: 28 syringes (one per day)
- Bacteriostatic Water (10 mL bottles):
- Per vial: 5.0 mL → 1 × 10 mL bottle per vial
- Alcohol Swabs: 2 per day (one for vial stopper, one for injection site) → 56 swabs per 4-week cycle.
Protocol Overview
- Goal: Support skin repair, wound healing, and matrix remodeling through collagen synthesis stimulation, MMP/TIMP balance, and broad genomic anti-inflammatory signaling[1][2].
- Schedule: Daily subcutaneous injections for 4 weeks, followed by a 2–4 week rest period.
- Dose range: 1–2 mg once daily; begin low and titrate up as tolerated.
- Reconstitution: 5.0 mL per 50 mg vial (10.0 mg/mL).
- Storage: Lyophilized frozen at −20 °C; reconstituted refrigerated at 2–8 °C; use within 4 weeks.
Dosing Protocol
- Starting dose: 1,000 mcg (10 units / 0.10 mL) once daily for Weeks 1–2[3].
- Standard dose: 2,000 mcg (20 units / 0.20 mL) once daily for Weeks 3–4.
- Frequency: Once daily, subcutaneous.
- Cycle length: 4-week active cycle; 2–4 weeks off before reassessment.
- Volume: 0.10–0.20 mL well within subcutaneous comfort range[6].
Storage Instructions
- Lyophilized: Store at −20 °C (−4 °F) or below for long-term stability[5]. Protect from moisture and light.
- Reconstituted: Refrigerate at 2–8 °C (35.6–46.4 °F). Do not freeze. Use within 4 weeks.
- Color check: GHK-Cu solutions appear blue—this is normal and indicates intact copper chelation.
- Inspect solution before each use; discard if discolored beyond the expected blue, cloudy, or particulate.
Important Notes
- Use new sterile insulin syringes for each injection; dispose in a sharps container immediately.
- Rotate injection sites (abdomen, thighs, upper arms) at least 1–2 inches apart to prevent local irritation.
- GHK-Cu solution is normally blue; inspect clarity but do not expect the colorless appearance of other peptides.
- Document daily dose, injection site, and any skin or local reactions to track response.
How This Works
GHK-Cu is a copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine that naturally occurs in human plasma, saliva, and urine. First isolated by Loren Pickart in 1973, plasma concentrations peak at approximately 200 ng/mL in young adults and fall to ~80 ng/mL by age 60[1].
Systemically administered GHK-Cu acts on multiple repair pathways. It stimulates fibroblasts to produce collagen I, III, and IV as well as glycosaminoglycans including dermatan and chondroitin sulfate[2]. It modulates the balance of matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs), enabling healthy matrix remodeling without excessive scar formation. It upregulates decorin, a small proteoglycan that organizes collagen fibrils for improved mechanical strength[2]. At the gene expression level, GHK-Cu can shift over 4,000 human genes toward repair and away from inflammatory destruction, including 31 genes associated with COPD-like tissue damage[1]. It also delivers bioavailable copper to cuproenzymes including lysyl oxidase (critical for collagen and elastin cross-linking) and SOD1 (antioxidant defense).
Potential Benefits & Considerations
- Skin rejuvenation: Human cosmetic trials show improved texture, fine-line reduction, and collagen density with topical GHK-Cu; injectable research extends these benefits systemically[3].
- Wound healing: Multicenter RCT demonstrated accelerated closure of diabetic foot ulcers with GHK-Cu gel adjunctive therapy[3].
- Post-procedure support: Randomized split-face trial showed improved CO2-laser resurfacing recovery with topical copper tripeptide complex[4].
- Tolerability: Generally well tolerated in cosmetic and clinical studies; systemic copper toxicity is unlikely at typical research doses given the high-affinity chelation that prevents free copper reactivity.
- Blue color: The characteristic blue appearance of GHK-Cu solutions can concern new users but is normal and expected.
Lifestyle Factors
- Maintain adequate dietary protein (1.2–1.6 g/kg body weight) to provide amino acids for collagen synthesis.
- Ensure adequate vitamin C intake (collagen cross-linking cofactor) and dietary zinc (wound healing cofactor).
- Protect skin from UV exposure during GHK-Cu protocols—new matrix is photosensitive.
- Adequate hydration supports dermal hydration and glycosaminoglycan production.
Injection Technique
- Clean vial stopper and injection site with separate alcohol swabs; allow both to air-dry fully.
- Using a 29–31 gauge insulin syringe (5/16″ to 1/2″ needle), draw the calculated dose.
- Pinch a skin fold; insert needle at 45° into subcutaneous tissue (90° acceptable with short needles into a pinched fold)[6].
- Inject slowly over 2–3 seconds; do not aspirate. Withdraw and apply gentle pressure.
- Rotate sites; dispose of syringe in sharps container immediately.
Recommended Source
We recommend White Market Peptides for high-purity GHK-Cu (50 mg vials).
Why White Market Peptides?
- Third-party tested with batch-specific Certificates of Analysis (HPLC + mass spec).
- Lyophilized powder with verified ≥99% purity and correct copper chelation.
- Reliable cold-chain shipping and transparent documentation.
Important Note
This content is intended for educational purposes only and does not constitute medical advice, diagnosis, or treatment. GHK-Cu is not approved for human therapeutic use as an injectable. For research use only.
References
-
International Journal of Molecular Sciences (MDPI, 2018)
— Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of New Gene Data -
PubMed — Simeon & Maquart (1999)
— Modulation by GHK-Cu of collagen synthesis and MMP/TIMP expression in dermal fibroblasts -
Wound Repair and Regeneration — Mulder et al. (1994)
— Enhanced healing of diabetic foot ulcers with GHK-Cu gel adjunctive therapy (multicenter RCT) -
Archives of Facial Plastic Surgery — Miller et al. (2006)
— Effects of topical copper tripeptide complex on CO2 laser resurfacing recovery (randomized split-face trial) -
Bachem Peptide Technical Guide
— Handling and Storage Guidelines for Peptides (lyophilized and reconstituted forms) -
CDC — General Best Practice Guidelines for Immunization
— Subcutaneous injection technique, angle, and site rotation guidance


