Leuprolide vs Decapeptide-12
Side-by-side comparison of key properties, dosing, and research.
Sexual Health & Libido
LeuprolideSkin & Cosmetic
Decapeptide-12- 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.
- Decapeptide-12 is a synthetic 10-amino acid peptide developed for skin brightening and depigmentation. It selectively inhibits tyrosinase activity and downstream melanogenesis pathways, reducing hyperpigmentation, dark spots, and uneven skin tone without the irritation associated with hydroquinone.
- Half-Life
- ~3 hours (SC/IM), but depot formulations last 1–12 months
- Not applicable (topical)
- Admin Route
- SubQ, IM
- Topical
- Research
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- Typical Dose
- 7.5 mg monthly, 22.5 mg 3-monthly, or 45 mg 6-monthly
- 5 ppm (0.0005%) concentration
- Frequency
- Per depot schedule
- Twice daily (AM and PM)
- 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
- Reduces hyperpigmentation and dark spots
- Evens skin tone and improves radiance
- Inhibits post-inflammatory hyperpigmentation
- Well-tolerated alternative to hydroquinone
- Effective for melasma and age spots
- Non-cytotoxic to melanocytes
- 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 very well-tolerated
- Rare mild irritation or sensitivity in some skin types
- Results may take several weeks to become visible
- Stacks With
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