Ingredient or product comparison
Best GHK-Cu Dosage Antioxidant 2026: Comparison
Subcutaneous Injection 1–1.5mg daily ~90–95% 90–120 min Bypasses first-pass metabolism; lower dose achieves systemic effect Low if proper reconstitution technique used Oral (Fasted) 2–3mg daily ~40–50% 2–3 hours Non-invasive; easier compliance for long-term pr
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- Subcutaneous Injection
- 1–1.5mg daily
- ~90–95%
- 90–120 min
- Bypasses first-pass metabolism; lower dose achieves systemic effect
- Low if proper reconstitution technique used
- Oral (Fasted)
- 2–3mg daily
- ~40–50%
- 2–3 hours
- Non-invasive; easier compliance for long-term protocols
- Moderate. Gastric pH and enzymes degrade ~50%
- Oral (Fed State)
- ~30–40%
- 3–4 hours
- Convenient with meals
- High. Lipase and delayed transit increase degradation
- Topical (Dermal)
- 5–10mg per application
- <5% systemic
- Negligible
- Localised skin antioxidant effect; no systemic exposure
- Very High. Oxidation and pH shifts in cream base