Leuprolide vs Cortagen
Side-by-side comparison of key properties, dosing, and research.
Sexual Health & Libido
LeuprolideAnti-Aging & LongevityRecovery & Repair
Cortagen- 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.
- Cortagen is a synthetic tetrapeptide (Ala-Glu-Asp-Pro) developed at the St. Petersburg Institute of Bioregulation as a cardioprotective and vascular bioregulator. It stimulates repair of cardiac and vascular tissue, with demonstrated benefits for coronary artery disease, atherosclerosis, and cardiac aging.
- Half-Life
- ~3 hours (SC/IM), but depot formulations last 1–12 months
- Short peptide half-life; gene regulatory effects persist beyond peptide clearance
- Admin Route
- SubQ, IM
- SubQ, IM, Oral
- Research
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- Typical Dose
- 7.5 mg monthly, 22.5 mg 3-monthly, or 45 mg 6-monthly
- 10 mg SC or IM daily
- Frequency
- Per depot schedule
- Once 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
- Cardioprotective — protects cardiac tissue from ischemic damage
- Promotes cardiac regeneration and repair
- Improves vascular endothelium function
- Reduces atherosclerosis progression
- Anti-aging effect on heart muscle cells
- Improves cardiac output and exercise capacity
- Reduces oxidative stress in cardiovascular tissue
- May reduce arrhythmia frequency
- 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
- Excellent safety profile
- Mild injection site reactions
- Rare: transient hypotension
- Rare: mild arrhythmia at initiation in cardiac patients
- Stacks With
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