Leuprolide vs AHK-Cu
Side-by-side comparison of key properties, dosing, and research.
Sexual Health & Libido
LeuprolideSkin & CosmeticAnti-Aging & Longevity
AHK-Cu- Summary
- Leuprolide is a synthetic GnRH superagonist that, with continuous administration, paradoxically suppresses LH and FSH through receptor desensitization — the opposite effect of pulsatile GnRH. Used medically for prostate cancer, endometriosis, and precocious puberty. In men's health, short-duration use for PCT and testosterone suppression rebound.
- AHK-Cu is a copper tripeptide composed of alanine, histidine, and lysine chelated to copper. Distinct from GHK-Cu, AHK-Cu exhibits strong affinity for hair follicle receptors and demonstrates potent hair growth stimulation alongside wound healing and skin regeneration properties.
- Half-Life
- ~3 hours (SC/IM), but depot formulations last 1–12 months
- Hours (topical, variable by formulation)
- Admin Route
- SubQ, IM
- Topical, Scalp application, Subcutaneous (research)
- Research
- —
- —
- Typical Dose
- 7.5 mg monthly, 22.5 mg 3-monthly, or 45 mg 6-monthly
- 0.01–0.1% concentration
- Frequency
- Per depot schedule
- Once or twice daily
- Key Benefits
- Medical: reduces testosterone in prostate cancer
- Medical: suppresses estrogen in endometriosis and uterine fibroids
- Medical: delays precocious puberty
- Research: testosterone rebound effect after short course
- Transgender care: hormone suppression in adolescents
- Research: hormonal re-sensitization protocols
- Stimulates hair follicle growth and reduces shedding
- Increases dermal papilla cell proliferation
- Promotes wound healing and skin regeneration
- Antioxidant protection via superoxide dismutase activation
- Improves skin elasticity and firmness
- Supports collagen and elastin production
- Side Effects
- Hot flashes (with testosterone suppression)
- Decreased libido and erectile dysfunction
- Initial testosterone flare (first 1–2 weeks)
- Bone density loss with long-term use
- +3 more
- Generally well-tolerated topically
- Mild scalp irritation or redness in sensitive individuals
- Possible temporary hair shedding phase at treatment initiation
- Copper accumulation with excessive systemic use (rare)
- Stacks With
- —
- —