Enclomiphene Citrate

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Also seen as: Androxal, enclo, Enclomiphene

The Dose Guy’s verdict

Sep 1, 2026
3 sources

The best tool on this shelf for restarting your own testosterone after a cycle, and the strongest option if you want endogenous production without pinning. Enclomiphene is the active isomer of clomiphene, with the moody, blurry-vision half stripped out. Two phase 3 trials back it, sperm stays intact, and the side profile is mild enough that most people notice nothing. If you need a PCT or a TRT alternative that keeps your own axis running, start here.

Would I take it?Yes, the clean restart.

What it is

Enclomiphene is the isolated trans isomer of clomiphene citrate, one half of the clomiphene molecule run on its own. It is a SERM, a selective estrogen receptor modulator: it blocks estrogen signaling at the hypothalamus, driving LH and FSH up, which tells your testes to produce more testosterone and sperm. Full clomiphene does the same thing, but carries a second isomer, zuclomiphene, that lingers for weeks and acts as a partial estrogen agonist, bringing the emotional volatility and visual disturbances clomiphene is known for. Remove zuclomiphene and you get a clean restart signal without the baggage.

That clean split is why enclomiphene has largely replaced clomiphene in the community. Same testosterone recovery, same fertility preservation, far fewer complaints about feeling flat or seeing floaters. The practical gap shows in animal work too: chronic dosing in mice found the testicular and kidney problems tracking only to the zuclomiphene side, not enclomiphene.

What the research shows

This is one of the better-backed SERMs for male use, with phase 3 data and multiple meta-analyses:

In two 16-week phase 3 trials, enclomiphene restored total testosterone to normal levels while maintaining sperm concentration in the normal range. Testosterone gel, the comparator, caused a marked reduction in spermatogenesis.BJU Int 2016 · phase 3 · 2 RCTs

A meta-analysis of SERM randomized trials in functional male hypogonadism found SERM therapy raised total testosterone by 273.76 ng/dL versus placebo, with p<0.01.AEM 2025 · meta-analysis

In chronically dosed male mice, isolated enclomiphene increased testosterone production without effects on testicular histology, while reproductive organ and kidney effects were associated only with zuclomiphene.BJU Int 2016 · chronic mouse study

No enclomiphene trial reports treatment beyond six months. Long-term durability and safety remain untested.as of Aug 2026

Realistic protocols

Once daily in the morning. The dose that matters is the one your bloodwork says is right, not the highest number on a forum protocol. Start at 12.5 mg. Get labs at four to six weeks: total testosterone, free testosterone, LH, FSH, and estradiol. If your numbers are in range and you feel good, that is your dose. Going to 25 mg because someone on a forum said to, when 12.5 already has you at 600 ng/dL, is just chasing side effects.

For PCT, the standard run is 25 mg daily for four to six weeks, starting after your last compound has cleared. If you ran hCG on cycle, the restart is smoother because your testes never fully went offline. Some people taper to 12.5 for the last two weeks, but there is no evidence either way, so tapering is preference.

For ongoing use as a TRT alternative or fertility bridge, 12.5 mg daily is where most people land. Recheck labs every three to six months. If testosterone drifts low, step to 25 before assuming enclomiphene has stopped working.

One practical note: enclomiphene raises estradiol alongside testosterone, because that is what a working axis does. If you feel puffy or emotionally off, check E2 before reaching for an aromatase inhibitor. Most of the time, estradiol is exactly where it should be for your testosterone level.

Start12.5 mg/dayOral, morning. Bloodwork at four to six weeks decides the next step.

Adjustup to 25 mg/dayOnly if labs say you need it. Holding at 12.5 when it works is winning.

PCT25 mg/dayFour to six weeks after your last compound clears. Pair with prior on-cycle hCG.

Ongoing12.5 mg/dayTRT alternative or fertility bridge. Recheck labs every three to six months.

Side effects

The cleanest side profile on this shelf, which is the whole point of isolating the isomer:

commonMild headache in the first week, occasional acne from rising testosterone. Most people report nothing at all.

monitorEstradiol rises alongside testosterone. Check it if you feel off, but do not crush it preemptively with an AI.

monitorVisual disturbances, floaters or blurred vision, are clomiphene’s classic warning sign. Enclomiphene largely sidesteps this because zuclomiphene is gone, but any visual change means stop immediately.

unknownNo trial has run longer than six months. The long-term picture of sustained SERM use in otherwise healthy men is an open file.