Enclomiphene is a compounded, prescription-only medication prepared by a licensed pharmacy as oral capsules. Its active ingredient is enclomiphene citrate, a selective estrogen receptor modulator (SERM) and the trans-isomer of clomiphene. Rather than supplying testosterone from outside the body, enclomiphene is used to prompt a man's own body to make more of its own testosterone.
Enclomiphene is not FDA-approved and is prescribed off-label, meaning for a use the FDA has not formally reviewed. A licensed pharmacy may compound it when a provider writes a prescription, and only a provider can decide whether it is appropriate. Looking for testosterone replacement instead? See Testosterone for Men.
How is it understood to work?
Enclomiphene is a SERM that blocks estrogen's signal at the pituitary gland and hypothalamus in the brain. Normally, estrogen tells the brain to slow the hormone signals that drive testosterone production. By blocking that signal, enclomiphene is understood to increase the release of two pituitary hormones, luteinizing hormone (LH) and follicle-stimulating hormone (FSH). LH prompts the testes to produce more testosterone, and FSH supports sperm production (StatPearls, clomiphene (mechanism)). Because it works through the body's own hormone axis rather than adding testosterone from outside, sperm production is generally maintained (systematic review, clomiphene/enclomiphene in male hypogonadism). The dose is set and adjusted by the prescriber, who monitors treatment.
What is it used for?
Providers may prescribe enclomiphene off-label as part of hormone therapy for men with low testosterone caused by secondary hypogonadism (low testosterone that results from reduced hormone signaling from the brain rather than a primary problem in the testes) when they determine it is appropriate (StatPearls). It is often considered for men who want to raise their testosterone while preserving fertility. Enclomiphene is not FDA-approved for this or any use, evidence is still developing, and results vary. Only a licensed provider can decide whether it is right for a particular patient; Bayview Pharmacy compounds enclomiphene to a provider's prescription and does not provide consultations or determine appropriateness. A valid prescription is required.
Enclomiphene vs. testosterone therapy
Enclomiphene and testosterone therapy raise testosterone in different ways. The table below explains the difference for education only; it is not a statement that either option is better, stronger, or more effective.
| Enclomiphene | Testosterone therapy (TRT) | |
|---|---|---|
| How it raises testosterone | Prompts the body to make more of its own testosterone (works on the brain's hormone signals) | Supplies testosterone from outside the body |
| Effect on fertility | Generally preserves the body's own sperm production | Can suppress the body's own sperm production |
| Form | Oral capsule (compounded) | Cream, gel, troche, or rapid-dissolve tablet (compounded) |
| Regulatory status | Off-label; not FDA-approved; not a controlled substance | FDA-approved products exist; Schedule III controlled substance |
This comparison is educational and is not a statement that enclomiphene is effective for any particular patient or superior to any alternative. Your provider determines which approach, if any, is appropriate for you. For testosterone, see Testosterone for Men.
How is it used?
Enclomiphene capsules are taken by mouth, commonly once daily, exactly as directed by your prescriber. Providers typically start at a low dose and adjust based on follow-up, and Bayview compounds the strength your provider orders (available strengths are shown in the strengths section). Your prescriber sets your dose and schedule, so never change your dose on your own. A Bayview pharmacist is available if you have questions about your prescription.
Side effects & safety
As with any medication, side effects are possible. Reported effects can include headache, hot flashes or flushing, nausea or other stomach upset, mood changes, and breast tenderness or enlargement (MedlinePlus, clomiphene). Report any effect that concerns you to your provider.
Seek medical care for signs of a serious problem, such as chest pain, shortness of breath, or signs of a serious allergic reaction (rash, swelling, or trouble breathing). Contact your provider about any reaction that concerns you.
Who should not use it?
Enclomiphene is not appropriate for everyone. It is generally avoided in anyone with a known sensitivity to clomiphene or enclomiphene or to an ingredient in the capsule, and it is used with caution in men with liver problems. It is a men's therapy and is not for use by women, especially those who are or may become pregnant, or by children. Tell your provider about your full medical history and all medications and supplements you take so they can determine whether enclomiphene is appropriate for you.
How should it be stored?
Store your capsules at room temperature as directed on the label, away from excess heat, light, and moisture, and keep them out of the reach of children. Do not use capsules after their expiration or beyond-use date, and dispose of unused medication as directed by your pharmacist.
Why is this compounded?
Because there is no FDA-approved enclomiphene product, enclomiphene is available only as a compounded preparation. Compounding lets a licensed pharmacy prepare enclomiphene citrate as capsules at the strength a provider orders and tailor the preparation to an individual prescription. As a 503A compounding pharmacy, Bayview Pharmacy prepares each order in small batches under USP <795> standards using quality ingredients. Compounded preparations are not FDA-approved.
Clinical details for prescribers
Class & mechanism. Enclomiphene citrate is the trans-isomer of clomiphene, a nonsteroidal SERM. It antagonizes estrogen receptors at the hypothalamic-pituitary level, reducing negative feedback and increasing LH and FSH, which raises endogenous testosterone via Leydig-cell stimulation while supporting spermatogenesis, in contrast to exogenous testosterone, which suppresses the HPG axis and can impair fertility. Unlike racemic clomiphene, enclomiphene lacks the long-half-life estrogenic zuclomiphene isomer (StatPearls).
Regulatory. Not FDA-approved (no approved enclomiphene product); prescribed off-label for secondary hypogonadism; legally compoundable; not a controlled substance. Evidence base is still developing (systematic review/meta-analysis).
Counseling & monitoring points:
- Typical off-label dosing is oral once daily; individualize and titrate to response and tolerability. Bayview compounds 6.25, 12.5, 25, and 50 mg capsules.
- Monitor total testosterone and, where fertility is a goal, semen parameters; assess symptoms at follow-up.
- Counsel on possible visual disturbances (discontinue and evaluate if they occur), hot flashes, mood changes, and gynecomastia/breast tenderness.
- Use caution with hepatic impairment; screen for hypersensitivity. Not indicated for women or children.
For exogenous androgen therapy see Testosterone for Men. Background: clomiphene for male hypogonadism, mechanisms and clinical implications.
Enclomiphene is a compounded medication and is not FDA-approved; it is prescribed off-label. This information is educational and is not a substitute for your provider's instructions. Your provider determines whether it is appropriate and sets the dose.
