Leuprolide vs Spermidine
Side-by-side comparison of key properties, dosing, and research.
Sexual Health & Libido
LeuprolideAnti-Aging & LongevityCognitive Enhancement
Spermidine- 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.
- Spermidine is a naturally occurring polyamine found in all living cells, with exceptionally high concentrations in wheat germ, aged cheese, and human sperm. It is the most studied autophagy-inducing dietary compound, shown to extend lifespan across multiple species and reduce cardiovascular and cognitive aging.
- Half-Life
- ~3 hours (SC/IM), but depot formulations last 1–12 months
- ~30–60 minutes, but gut bacteria produce it continuously; supplementation raises tissue levels over weeks
- Admin Route
- SubQ, IM
- Oral
- Research
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- Typical Dose
- 7.5 mg monthly, 22.5 mg 3-monthly, or 45 mg 6-monthly
- 1–5 mg
- 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
- Induces autophagy — cellular self-cleaning
- Extends lifespan in yeast, flies, worms, and mice
- Reduces cardiovascular aging and arterial stiffness
- Reduces all-cause mortality (human epidemiological data)
- Neuroprotective: reduces amyloid and tau pathology
- Promotes hair growth (anagen phase activation)
- Reduces age-related immune decline
- Improves memory in aging models
- 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 GI discomfort at high doses
- May temporarily reduce some gut bacteria species
- Rare: headache at initiation
- Stacks With
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