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Enclomiphene 12.5 mg - 28 capsules

Enclomiphene 12.5 mg - 28 capsules is part of a prescriber-directed hormone or endocrine protocol. It should be selected based on symptoms, diagnosis, labs when appropriate, route preference, contraindications, and ongoing monitoring.

CapsuleAs prescribedRx Only503A Compounded

Enclomiphene 12.5mg is a 28-capsule oral preparation containing 12.5 mg of enclomiphene, the trans-isomer of clomiphene citrate and a selective estrogen receptor modulator (SERM). By antagonizing estrogen receptors in the hypothalamus and pituitary gland, enclomiphene disinhibits the HPG axis to stimulate endogenous LH/FSH release and testicular testosterone synthesis in men with secondary hypogonadism. The 28-capsule supply corresponds to a one-month treatment course of once-daily dosing. Genesis Compounding prepares this as a prescription-only, patient-specific 503A compounded preparation that is not FDA-approved as a compounded product.

Active IngredientPharmacologic Role
Enclomiphene 12.5mgNon-steroidal SERM (pure estrogen receptor antagonist); blocks negative estrogen feedback at the hypothalamus and pituitary to increase LH and FSH secretion and stimulate endogenous testicular testosterone production while preserving spermatogenesis.

Route: Oral capsule.

  • Take one capsule by mouth once daily, with or without food.
  • Administer at a consistent time each day (typically in the morning) to align with the natural diurnal testosterone rhythm.
  • Swallow capsule whole; do not open or crush.
  • Complete the full 28-day supply as directed by the prescriber; laboratory follow-up is typically scheduled near the end of the supply period.

Dosing is prescriber-directed. 12.5 mg once daily is within the range studied in phase II/III clinical trials of enclomiphene for male secondary hypogonadism. Key dosing considerations:

  • Clinical trials demonstrated testosterone normalization with both 12.5 mg and 25 mg once daily.
  • The 12.5 mg dose is often used as a starting or conservative maintenance dose, with titration to 25 mg based on serum testosterone and clinical response.
  • LH, FSH, and testosterone levels are reassessed at 4–8 weeks to guide dose adjustment.
  • Enclomiphene's half-life of approximately 10 hours supports once-daily dosing; LH/FSH elevation persists several days after a missed dose.
  • Enclomiphene (12.5mg): Competitively antagonizes estrogen receptors (ERα, ERβ) at the hypothalamus and pituitary, blocking estrogen-mediated negative feedback on GnRH pulsatility. Increased GnRH pulse frequency drives pituitary LH and FSH secretion. Elevated LH stimulates Leydig cell testosterone synthesis; elevated FSH supports Sertoli cell function and sperm production. Because enclomiphene acts upstream (stimulating endogenous production rather than replacing testosterone exogenously), HPG axis integrity and testicular function are preserved.

Clinical Context: 12.5 mg enclomiphene once daily is prescribed for men with secondary (hypogonadotropic) hypogonadism — low testosterone with inappropriately low or normal LH/FSH — particularly when fertility preservation is important. Phase III studies demonstrated normalization of serum testosterone while preserving sperm density, in contrast to testosterone replacement therapy which suppresses spermatogenesis. This dosage level is appropriate for initial treatment in men with milder testosterone deficiency or as a maintenance dose after response confirmation at higher doses.

Monitoring:

  • Serum total testosterone (morning), LH, FSH, and estradiol at 4–8 weeks.
  • Semen analysis if fertility preservation is a goal.
  • Symptom reassessment (energy, libido, mood, cognitive function).
  • Estradiol monitoring for potential gynecomastia.
  • Visual assessment: discontinue if visual disturbances develop.

Contraindications:

  • Hypersensitivity to enclomiphene or clomiphene class drugs.
  • Primary (testicular) hypogonadism — absent Leydig cells will not respond to HPG stimulation.
  • Women — enclomiphene at this dose is not indicated for female use.
  • Pre-existing hepatic disease.

Warnings & Precautions:

  • Visual disturbances: discontinue and evaluate if any visual changes develop.
  • Estradiol elevation from aromatization of increased testosterone — monitor; co-prescribe anastrozole if clinically indicated.
  • Not a substitute for TRT in primary hypogonadism or in patients requiring rapid testosterone normalization.

Drug Interactions:

  • Other SERMs: potential additive HPG axis effects.
  • Aromatase inhibitors: often co-prescribed to manage estradiol rise.
  • Hepatotoxic agents: use with caution given hepatic metabolism.

Common Side Effects: Headache, elevated estradiol, gynecomastia, abdominal discomfort, mood changes, visual disturbances (rare). Lower incidence of estrogenic side effects compared to racemic clomiphene due to absence of the zuclomiphene isomer.

Store at controlled room temperature (20–25°C / 68–77°F). Protect from moisture and light. Keep in original sealed container. Store out of reach of children. Use before the beyond-use date assigned by Genesis Compounding. The 28-capsule supply should be used within the dispensed period; contact Genesis if additional supply is needed before the beyond-use date.

Why does this come as a 28-capsule supply?

A 28-capsule supply corresponds to a one-month course at once-daily dosing. This is calibrated to align with a follow-up clinical visit and laboratory reassessment (testosterone, LH, FSH) at approximately 4 weeks, allowing the prescriber to evaluate response and make any dose adjustments before dispensing the next supply.

What if I miss a dose?

Take the missed dose as soon as remembered unless it is close to the next scheduled dose — do not double up. Enclomiphene's HPG axis stimulatory effect persists for several days after a single dose, so a single missed dose is unlikely to cause a significant hormone dip. Contact the prescriber if multiple consecutive doses are missed.

Will this increase my sperm count?

Enclomiphene stimulates FSH, which supports Sertoli cell function and spermatogenesis. Unlike testosterone replacement therapy, it does not suppress sperm production and may help maintain or improve sperm parameters. A semen analysis at 3–6 months of treatment is appropriate if fertility is a clinical goal.

How is this different from a higher 25mg dose?

12.5 mg and 25 mg both increase testosterone and gonadotropins in clinical trials. The 12.5 mg dose produces a somewhat lower testosterone increase and may have a slightly more conservative side effect profile. The prescriber selects the dose based on baseline testosterone deficit, symptom severity, and laboratory response.

Is this product FDA-approved?

Enclomiphene (Androxal®) was studied extensively in phase III trials but was not FDA-approved for male secondary hypogonadism. This is a compounded, patient-specific 503A preparation prepared by Genesis Compounding under prescriber direction.

Clinical References

Authoritative sources reviewed in preparing this clinical summary. Provided for prescriber reference; not a substitute for the prescriber’s clinical judgment.

Enclomiphene Citrate for the Treatment of Secondary Male Hypogonadism
PubMed / Expert Opinion on Pharmacotherapy, 2016
Source →
Clomiphene or enclomiphene citrate for male hypogonadism
PubMed / Archives of Endocrinology and Metabolism, 2025
Source →
DailyMed: Clomiphene citrate (class reference for SERM pharmacology)
NIH DailyMed
Source →