Hormone Support

Enclomiphene

Androxal · EN-CLO · trans-clomiphene

Enclomiphene is the ultra-purified trans-isomer of traditional Clomid (clomiphene citrate), stripped entirely of the toxic, emotionally destabilizing Zuclomiphene isomer. It is universally regarded as the premier modern SERM for advanced male hormone optimization. By aggressively tricking the brain into sensing a zero-estrogen environment, it forces massive endogenous testosterone production without causing the testicular shrinkage or infertility guaranteed by traditional TRT injections.

Not FDA-approved - research chemical
Reviewed by CalcMyPeptide Editorial Team
Last updated: August 2026Evidence: Moderate1 peer-reviewed citation
Typical research dose
12.5-25 mg/day (oral)
Frequency
1× daily (oral)
Half-life
~5-7 hours (shorter than zuclomiphene)
Common vials
N/A (oral)
CAS
7599-79-3
Molecular weight
406.0 g/mol

Use-case scores

0–10 against the evidence we have, not a gym ranking. Hidden domains do not apply here.

  • Sexual / hormonal5.5/10

    SERM that raises LH/FSH/T in men in published work. Not FDA-approved as Androxal as of this review. Not clomiphene racemate 1:1. Small-human / development: 5.5.

Compound card

Class
Trans-clomiphene SERM (not a peptide)
Formula
C26H28ClNO
Status
Not FDA-approved · research use

How it works

Enclomiphene is the trans-isomer of clomiphene citrate - a selective estrogen receptor modulator (SERM). While clomiphene is a mixture of zuclomiphene (cis) and enclomiphene (trans), enclomiphene provides the primary testosterone-stimulating effect by blocking estrogen receptors in the hypothalamus and pituitary, triggering increased LH and FSH secretion. This stimulates testicular testosterone production while preserving spermatogenesis - making it a preferred alternative to exogenous testosterone for men who wish to maintain fertility. Enclomiphene is specifically studied as a standalone SERM for secondary hypogonadism.

Source: PMID: 23602453 (Phase 3)

Research Use Cases

  • ✓Secondary Hypogonadism: High
  • ✓Post-Cycle Therapy (PCT): High

Dosing

PhaseDoseFrequencyNotes
Standard12.5 - 25 mgOnce daily (oral)Used for secondary hypogonadism and PCT (post-cycle therapy). Dose guided by follow-up T levels.

Administration

Route / form
Oral capsule
Timing
Once daily, any time. No fasting required.
Empty stomach?
No - Food timing is not critical.

Timeline

Week 1-2
LH and FSH elevation begins. Testosterone starts rising.
Week 4-8
Testosterone often reaches mid-to-upper normal range (400-700 ng/dL typical).

Who it is for

Secondary Hypogonadism

High

Raises testosterone while preserving fertility - preferred over TRT for men wanting to conceive.

Post-Cycle Therapy (PCT)

High

Rapidly restores HPG axis function after anabolic steroid cycles.

Safety & Considerations

Not FDA-approved as a standalone drug (NDA rejected 2015 but re-filed). Available compounded. Avoid in active or history of thromboembolic events. Monitor vision (rare visual disturbances). Do not use with exogenous testosterone.

Regulatory & Legal Status

FDA Status (US)
Research Only
WADA Status (2026)
Not Listed

Not currently on the WADA 2026 Prohibited List. Policies may change - verify before competition.

Classification

Research Chemical

US Compounding: Not eligible / not available

⚠️ This information is for educational purposes only and may not reflect the most current regulatory updates. Always verify with official FDA, WADA, and jurisdiction-specific sources before use.

Limits of current evidence

  • Not FDA-approved testosterone replacement as of 2026-08-31.
  • This site will not treat hypogonadism from an enclomiphene page.

Verdict

Enclomiphene is a SERM, not a peptide. We list it because TRT-adjacent searchers land here. It is not hCG and not a secretagogue. Fertility and hematocrit conversations belong with a clinician.

Interactions & Contraindications

Not FDA-approved as a standalone drug (NDA rejected 2015 but re-filed). Available compounded. Avoid in active or history of thromboembolic events. Monitor vision (rare visual disturbances). Do not use with exogenous testosterone.

Frequently Asked Questions

Is enclomiphene better than clomid for testosterone?▼
Enclomiphene is the active isomer responsible for testosterone stimulation. By removing the zuclomiphene isomer (which accumulates and causes side effects like mood swings), enclomiphene provides a cleaner response with fewer estrogenic side effects.
Can enclomiphene replace TRT?▼
For men with secondary hypogonadism (pituitary-driven low T), enclomiphene can raise testosterone to normal ranges while preserving sperm production. It does not work for primary hypogonadism (testicular failure).

References

  1. Kim ED et al. “"Enclomiphene citrate stimulates testosterone production".” BJU International (2016). PMID: 26496621

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