Clomiphene
Also known as: Clomid, Clomiphene citrate
A selective estrogen receptor modulator (SERM) used off-label to raise endogenous testosterone and to restart natural production in post-cycle therapy. Prescription medication (approved for female fertility).
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Mechanism of Action
Clomiphene blocks estrogen receptors at the hypothalamus and pituitary, removing negative feedback so the body secretes more GnRH, LH, and FSH — which raises endogenous testosterone and supports spermatogenesis. It is a mixture of two isomers: enclomiphene (trans, the anti-estrogenic driver) and zuclomiphene (cis, longer-acting and more estrogenic), which is why side-effect profiles differ from pure enclomiphene.
- Half-life
- Mixed — days for enclomiphene, weeks for the zuclomiphene isomer
- Administration Routes
- Oral
- Research Status
- Clinical
Reported Benefits
- Raises endogenous testosterone without exogenous hormone
- Preserves fertility and testicular function
- Used in post-cycle protocols to restart natural production
Potential Side Effects
- Mood changes, irritability (partly the zuclomiphene isomer)
- Visual disturbances (rare, SERM class effect)
- Elevated estradiol in some users
Common Dosing
Reported off-label protocols use a low oral daily or every-other-day dose, or a tapering course in PCT, titrated to labs and symptoms. Investigational for men; use only under medical supervision.
The dosing information above is aggregated from research literature and anecdotal community reports for educational purposes only. It is not a recommendation, prescription, or medical advice. Peptides are sold as research chemicals only and are not intended for human use.
Contraindications
- Pre-existing visual disorders
- Hormone-sensitive conditions
- Liver disease
- Use only under medical supervision
HCG (Human Chorionic Gonadotropin)
A glycoprotein hormone produced in pregnancy that mimics luteinizing hormone, used clinically to stimulate gonadal function. It is studied to support testosterone production and fertility.
Tamoxifen
A selective estrogen receptor modulator (SERM) used off-label to manage gynecomastia and in post-cycle therapy. Prescription medication (approved for breast cancer).
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Long-Term Safety and Efficacy of Clomiphene Citrate for the Treatment of Hypogonadism
2019
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Clomiphene citrate and human chorionic gonadotropin are both effective in restoring testosterone in hypogonadism: a short-course randomized study
2018
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A Randomized Prospective Double-Blind Comparison Trial of Clomiphene Citrate and Anastrozole in Raising Testosterone in Hypogonadal Infertile Men
2015
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Clomiphene citrate versus testosterone replacement therapy in male hypogonadism: a systematic review of literature and meta-analysis
2026
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Clomiphene Citrate in off-Label Post-Cycle Therapy: Mechanisms, Efficacy and Diagnostic Challenges in Endocrine Recovery Following Anabolic Steroid Use
2026