Clomiphene: The Definitive Guide

What is clomiphene?

Clomiphene (clomiphene citrate, best known as Clomid) is a prescription tablet that makes the brain ask the testicles for more testosterone. It does this by blocking estrogen's feedback signal in the brain. It is approved only to help women ovulate, but doctors prescribe it off-label to men with low testosterone, especially men who want to keep their fertility. [1], [2]

It belongs to a group of medicines called SERMs (selective estrogen receptor modulators). The body uses estradiol, the main estrogen, as a gauge: when the brain senses enough of it, the pituitary gland at the base of the brain turns down its two signals to the testicles, LH (luteinizing hormone) and FSH (follicle-stimulating hormone). Clomiphene sits in the estrogen receptors of the brain and blocks that gauge, so the pituitary releases more LH and FSH. LH tells the testicles to make testosterone, and FSH supports sperm production. [2], [3], [4]

That is the key difference from testosterone replacement therapy (TRT), which supplies testosterone from outside and switches the LH and FSH signals off. Clomiphene turns them up, so it only works when the testicles can still respond. The European urology guideline says SERMs "cannot work" when the testicles themselves fail (primary hypogonadism) or the brain-to-testes chain is damaged, and the British Society for Sexual Medicine (BSSM) says not to use them when pituitary function is compromised. [5], [6]

Two drugs in one tablet. Clomiphene is a mix of two mirror-image forms (isomers): enclomiphene, which blocks estrogen, and zuclomiphene, which acts partly like estrogen and lingers in the body for weeks. The US label says 30–50% of the mix is zuclomiphene. Enclomiphene alone is sold as a separate, unapproved product; see the enclomiphene guide. [1], [7]

Its status for men. The US Food and Drug Administration (FDA) approved clomiphene for ovulation problems in women in 1967. Its label says there are "no adequate or well-controlled studies" showing that it works for male infertility, and the US Department of Veterans Affairs (VA) notes that no long-term, adequately powered randomized trial in men exists. [7], [1], [3]

[8], [9], [10], [11], [12], [13], [14]

Clomiphene is not a steroid and not a controlled substance in the United States. It is, however, banned in sport, and it is widely used outside medical care as "post-cycle therapy" after anabolic steroids, which this guide describes but does not treat as a protocol. [15], [16], [17]

Typical Clomiphene Protocols

The two clinic protocols start at 25 mg every other day and step up to 50 mg every other day (US pathway) or 50 mg daily (Dutch cohort); the AUA lists 25–50 mg every 1–2 days. Trials mostly used 25 mg or 50 mg once a day for 3 to 6 months. [18], [7], [19], [20], [21]

Titration Adjusting the dose

The AUA checks testosterone no sooner than 4 weeks after starting and measures LH too. If testosterone is still low and LH is low or normal, the dose goes up. If testosterone is low but LH is high, the testicles are not responding, and a higher dose is unlikely to help. The US academic pathway repeats labs every 4 weeks after each change until testosterone reaches goal, then every 6 months, and lowers the dose when estradiol reaches 60 pg/mL (about 220 pmol/L). [18], [7] See where protocols differ.

Breaks and cycles

Not established for men. Studies used continuous treatment for up to 8 years, and no source describes planned cycles. The label's limit of about six courses applies to women's 5-day ovulation courses, not to men. When clomiphene stops, testosterone usually falls back (what happens when you stop). [19], [22], [1]

Read the units. Clomiphene comes only as a 50 mg tablet, so a 25 mg dose means half a tablet (the US and Australian tablets are scored for splitting). "Every other day" works out to about 3.5 doses a week: 25 mg every other day is about 87.5 mg a week, and 50 mg a day is 350 mg a week. There are no millilitres or syringe units to convert, so an injection calculator does not apply. [1], [13]

These are guideline, clinic and trial doses for an off-label use; prescribers adjust them using blood tests (testosterone, LH and estradiol) and symptoms. These guides are for men. Clomiphene's labeled use in women is fertility care outside this guide, and testosterone for women is covered in testosterone therapy for women.

Cautions for every schedule above. Any vision change (blurring, spots or flashes) means stopping and getting a full eye exam, because the labels say such changes can occasionally be permanent. The US label rules clomiphene out with liver disease or a pituitary tumor, the European urology guideline warns of a possible blood-clot risk, and estradiol rises along with testosterone (monitoring). [1], [11], [5]

Where schedules differ: every other day vs daily, 25 vs 50 mg, who is likely to respond, estradiol, and whether it stops working ↓

What doses did studies in men use?

The rows are alternatives, not steps to move through. Most used daily dosing, which the US academic pathway avoids. [7]

What is clomiphene commonly used for in men?

Every use in men is off-label. Guidelines allow clomiphene as an option in a few situations, and none recommends it over testosterone for men who do not care about fertility. The AUA adds a warning that matters for every use below: the benefits proven for testosterone therapy "cannot be extrapolated" to alternatives such as clomiphene. [18], [2]

• Low testosterone with low or normal LH, when fertility matters. This is its main role in guidelines. The US infertility guideline says clinicians may use SERMs, hCG, aromatase inhibitors or a combination in infertile men with low testosterone, and should not prescribe testosterone to men who want children now or later. [2]
• Low testosterone linked to obesity. Several trials in men with obesity, often alongside advice to lose weight first. [26], [21]
• Male infertility with normal testosterone. Common in fertility clinics, but the evidence for pregnancies is weak. [36], [30]
• Restarting your own production after TRT or anabolic steroids. Widely discussed; the evidence mostly comes from combinations with hCG. [37], [29]

Can clomiphene raise testosterone instead of TRT?

Yes, in men whose testicles and pituitary work, but the evidence is mostly about blood levels, not how men feel. A 2025 meta-analysis of randomized trials found that clomiphene or enclomiphene raised total testosterone by about 274 ng/dL (about 9.5 nmol/L) more than placebo, similar to testosterone gel, while also raising LH and FSH. A 2026 meta-analysis of 11 studies and 1,512 men found testosterone levels on clomiphene similar to gel, but libido scores improved less than on testosterone therapy. [4], [38]

In clinic studies, levels often roughly double: in a Dutch hospital cohort of 153 men, average testosterone rose from 9 to 16 nmol/L (about 260 to 460 ng/dL), and the rise lasted up to 8 years in men who stayed on it. [19]

Guidelines are cautious. The Endocrine Society says neither its efficacy nor its safety has been shown in randomized trials, the VA considers it only case by case for men with low LH who want fertility, and the European urology guideline calls the evidence poor. For the symptom evidence, see can testosterone rise without feeling better? [24], [3], [5]

Does clomiphene help fertility?

It helps sperm counts in some men, but no trial has shown that it leads to more pregnancies. It raises FSH, which drives sperm production, instead of switching it off the way testosterone does. The results in men with fertility problems are mixed:

• The largest placebo-controlled trial found no benefit. In a World Health Organization trial of 190 couples, men took 25 mg a day or a placebo for 6 months; pregnancies by 8 months were 8.1% on clomiphene and 11.7% on placebo, and semen quality did not change. [30]
• Reviews disagree. A 2013 meta-analysis of 11 randomized trials that pooled clomiphene and tamoxifen found more pregnancies (odds ratio 2.42; its abstract gives no absolute pregnancy rates), an older Cochrane review found no clear difference and was later withdrawn, and a 2025 review concluded the effect on pregnancy "remains uncertain". [39], [40], [41]
• Sperm counts rise on average. A 2023 meta-analysis found sperm concentration about 8.4 million per mL higher during treatment, mostly in uncontrolled before-and-after studies, and a 2025 network analysis found 25 mg every other day gave the biggest rise in concentration, though nothing improved sperm movement. In a small placebo-controlled trial of 50 men, 50 mg a day raised sperm counts. [42], [43], [31]
• Counts can also fall. In 166 Italian men with low testosterone and low sperm counts, clomiphene normalized testosterone in 91%, but sperm concentration fell in 29%. A normal testosterone result does not tell you what is happening to sperm. [35]

Guidelines reflect this. For infertile men with low testosterone, the US infertility guideline allows SERMs among other options (Conditional recommendation; Grade C evidence). For unexplained infertility with normal hormones, the European urology guideline says not to use SERMs routinely. [2], [36]

A small trial of clomiphene plus vitamin E reported 11 pregnancies among 30 couples against 4 of 30 on placebo, but the combination hides clomiphene's own effect. [44] In 496 men with no sperm who were heading for surgical sperm retrieval and were given clomiphene (with hCG or hMG added when hormones did not rise enough), 54 (about 11%) had sperm appear in the ejaculate, in a study without random assignment. [45]

See TRT and fertility for the full picture, including sperm banking and recovery after TRT.

Does clomiphene help low testosterone linked to weight?

It raises testosterone in men with obesity, but weight loss comes first in guidelines, and the symptom gains are small. In a placebo-controlled trial of 78 men with obesity, 12 weeks of 50 mg raised testosterone, estradiol, LH and FSH, increased lean mass, and improved one sexual complaint (weaker erections), but it lowered HDL ("good") cholesterol. In a crossover trial of men with obesity and prediabetes or diabetes on metformin, 25 mg a day raised testosterone from 3.03 to 5.99 ng/mL (about 300 to 600 ng/dL) over 3 months, while placebo changed little; a follow-up analysis found no clear benefit for sexual function. [26], [21], [46]

A 2023 meta-analysis of men with obesity found clomiphene raised testosterone by about 11.6 nmol/L in short courses, and a 2026 network analysis of 23 trials found no single treatment clearly best for obesity-related low testosterone. See obesity-related hypogonadism. [47], [48]

Is clomiphene used after stopping TRT or steroids?

Often, but there is no controlled trial of clomiphene alone for this, and the recovery evidence comes mostly from hCG-based combinations. In 66 men treated with hCG plus a SERM after testosterone use, 70% reached a total motile sperm count above 5 million within 12 months; older men and men who had used testosterone longer recovered more slowly. In one reported case, clomiphene alone did not restore sperm counts after long-term injections of testosterone undecanoate. [37], [49]

After anabolic steroids, the advice is firmer. The European Academy of Andrology says clomiphene or hCG "should not be used" to hasten recovery, because there is not enough evidence that they work, and the European urology guideline puts stopping the steroid first, with sperm usually improving over 6 to 12 months. In men with steroid-related azoospermia (no sperm) treated with clomiphene plus hCG, 27.8% of those followed still had no sperm after 6 months. A pilot study of clomiphene after steroid use has published its plan but no results. [29], [36], [50], [51]

Post-cycle schedules are not protocols, and this guide does not give any. See stopping TRT and TRT vs steroids.

Where do clomiphene protocols differ?

Clomiphene dosing in men is, in the words of the US academic pathway, "empiric": it grew out of clinic experience, not dose-finding trials, which leaves real disagreements. [7]

Every other day or daily?

The US academic pathway prefers every other day; the AUA allows every 1–2 days, and most trials used daily dosing. The pathway starts at 25 mg every other day, goes up to 50 mg every other day, and "typically" avoids daily dosing because of a worry that the drug stops working over time (tachyphylaxis, below). The Dutch cohort also started every other day, but raised the dose to 50 mg daily when the response was small. No trial has compared schedules directly. [7], [18], [19]

Zuclomiphene, the lingering half of the tablet, is one reason people argue for less frequent dosing: in 15 men on 25 mg a day for about 2 years, blood levels of zuclomiphene were 20 times those of enclomiphene. Whether that build-up causes side effects has not been shown (two drugs in one). [52]

Start at 25 mg or 50 mg?

Both are used. The US academic pathway and the Dutch cohort start at 25 mg every other day. In the records of 332 men treated at two US fertility centers, 50% started on 50 mg every other day, 27% on 25 mg every other day, 18% on 50 mg daily and 5% on 25 mg daily. [7], [19], [53]

Who is likely to respond? The LH question

Men with low or normal LH respond more often in some studies, but not in all. The US academic pathway does not offer clomiphene when LH is above 6 IU/mL, because a high LH suggests the testicles are the problem. Its earlier study of 76 men found that an LH of 6 or lower (hazard ratio 3.5) and larger testicles predicted a response, and its 2026 study of 292 men found each 1-unit rise in baseline LH lowered the odds of responding (odds ratio 0.82). [7], [54], [55]

In 332 younger men at fertility centers, however, baseline LH and FSH did not predict the rise in testosterone. [53] In 69 young men with obesity on 25 mg every other day, median testosterone rose from 226 to 389 ng/dL; lower LH and FSH and a younger age went with a bigger rise, while the starting estradiol level made no difference. [56]

The AUA uses LH differently: it looks at LH after starting, and a high LH with a still-low testosterone means the testicles are not responding. [18]

What counts as success?

Response rates depend on how a study defines success, how old the men were and how long they were followed, which is why published figures range from under half to nearly 9 in 10.

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Clomiphene "response rates" depend on the definition

Share of men counted as responding in five clinic studies. Bars run from 0 to 100% of men.

Kim 2026 (292 men): 47%

Counted as success: reached at least 400 ng/dL plus a rise of at least 200 ng/dL within 12 weeks. Median age 60; many after prostate cancer treatment.

Mazzola 2014 (76 men): 62%

Counted as success: rise of at least 200 ng/dL (mean on-treatment 467 ng/dL). Mean age 46; treated at least 6 months.

Keihani 2020 (332 men): 73%

Counted as success: rise of at least 200 ng/dL. Mean age 36; two US fertility centers.

Krzastek 2019 (120 men): 88%

Counted as success: normal testosterone after more than 3 years of treatment. Long-term subgroup of 400 men.

Huijben 2023 (153 men): 89%

Counted as success: any biochemical rise in testosterone. Dutch hospital; followed up to 8 years.

Observational clinic studies; none is randomized. Definitions and groups differ, so do not compare bars directly.

• 47% of 292 mostly older men (median age 60, many after prostate cancer treatment) reached at least 400 ng/dL plus a 200 ng/dL rise within 12 weeks. [55]
• 62% of 76 men rose by at least 200 ng/dL, to an average of 467 ng/dL. [54]
• 73% of 332 younger men rose by at least 200 ng/dL. [53]
• 88% of 120 men treated for more than 3 years had normal testosterone. [22]
• 89% of 153 men had some rise in testosterone. [19]

High estradiol: lower the dose or add an aromatase inhibitor?

Estradiol rises on clomiphene, and sources handle it differently. The US academic pathway aims for estradiol of 20–40 pg/mL (about 73–147 pmol/L) and first lowers the clomiphene dose when it reaches 60 pg/mL or more, which it says usually normalizes the level; some men also get an aromatase inhibitor. In one US fertility practice, 97 of 318 men on clomiphene (30.5%) later had anastrozole added, more often when they had obesity or a higher starting estradiol. [7], [57]

The VA does not generally recommend aromatase inhibitors for men, citing heart events, belly fat and bone loss. In the only randomized comparison, clomiphene raised testosterone more than anastrozole did, while estradiol rose on clomiphene and fell on anastrozole; semen and symptom scores did not differ. See anastrozole and estrogen on TRT. [3], [20]

Does clomiphene stop working over time?

Nobody has measured how often. The US academic pathway says "about 1 in 10" of its patients meet its definition of tachyphylaxis (a fading response), but that is a clinical impression without a count, and the same paper notes there is no standard definition and that most data are case reports. The AUA calls the concern "anecdotal" and advises checking testosterone regularly. The long-term cohorts point the other way on average: 88% of men treated for more than 3 years had normal testosterone, and in the Dutch cohort the rise lasted up to 8 years in men who stayed on it. [7], [18], [22], [19]

Can clomiphene be taken with TRT?

It is sometimes prescribed alongside testosterone, but there is no controlled evidence that it protects fertility during TRT. Outside testosterone switches off LH and FSH at the pituitary, which is the very signal clomiphene is meant to raise. The US infertility guideline calls the evidence for adding hCG, SERMs or FSH to testosterone too limited to recommend. In one large UK clinic cohort, 8% of men were prescribed clomiphene with testosterone, while clomiphene alone raised LH and FSH over 6 months. [2], [58] See TRT and fertility.

What happens when you stop clomiphene?

For most men, testosterone falls back toward where it started, because clomiphene boosts the body's own signal rather than fixing its cause. [19], [28]

• During a planned break. In the Dutch cohort, 52 men stopped for a trial period, and testosterone fell in 48 of them (94%), from an average of 19.1 to 10.8 nmol/L (about 550 to 310 ng/dL). [19]
• After a short course. In 75 men given 50 mg a day for 40 days, 18 (24%) still had testosterone above 300 ng/dL and no symptoms 6 months after stopping; the authors concluded that most men need ongoing treatment. [28]
• Many stop anyway. A third of the Dutch cohort stopped in the first year, most often because they felt too little effect. In US insurance claims for 12,318 men, the median time on clomiphene was 3.6 months, and 63% stopped within 6 months. [19], [59]
• The drug lingers. Zuclomiphene stays in the blood for more than a month after a single dose, and after 30 days of 50 mg a day it was detectable in urine for 121 to more than 261 days. No study has timed how quickly side effects fade after stopping. [1], [60], [61]
• No taper. No source describes tapering clomiphene off.

See stopping TRT for the wider picture, including restarting your own production.

How does clomiphene behave in the body?

It is a tablet swallowed with water, so there is no injection, no skin gel that can transfer to a partner, and no peak-and-trough cycle like injected testosterone. What sets clomiphene apart is how slowly it leaves the body and the fact that it contains two different drugs. [1]

How long does clomiphene last in the body?

A long time. The AUA's table gives a peak about 5 hours after a dose and a half-life of 5–7 days. In the label's study with a radioactive tracer, about half of an oral dose left the body within 5 days, mostly in the feces, and traces were still found 6 weeks later. Zuclomiphene has a longer half-life than enclomiphene and stayed detectable for more than a month after a single dose. [18], [1], [60]

No study has tested whether food changes absorption, and no pharmacokinetic study has been done in men with low testosterone.

Why does it matter that clomiphene is two drugs in one?

Enclomiphene blocks estrogen receptors; zuclomiphene acts partly like estrogen and builds up. In men on long-term 25 mg daily, median blood levels were 44.0 ng/mL of zuclomiphene against 2.2 ng/mL of enclomiphene, a 20-to-1 ratio (several authors of that study worked for a company developing enclomiphene). [52], [7]

Whether zuclomiphene causes clomiphene's mood or estrogen-like side effects is a hypothesis, not a finding. In one observational study of 66 men who switched from clomiphene to enclomiphene, estradiol rose less and side effects were less common on enclomiphene. See enclomiphene. [62]

Does your genetic makeup change how clomiphene works?

Possibly. The liver enzyme CYP2D6 turns clomiphene into its most active forms, and in healthy volunteers, gene variants of that enzyme changed levels of the active forms several-fold. No study has linked this to how men respond, and no guideline tests for it. [63], [64]

What testosterone levels does clomiphene reach compared with gel and injections?

About the same as gel and well below injections. In an age-matched comparison of 31 men per group, median testosterone rose from 247 to 504 ng/dL on clomiphene, from 230 to 412 on gel, and from 224 to over 1,000 on injections (the abstract prints the final injection value as both 1,104 and 1,014). In another clinic comparison, average testosterone was 573 ng/dL on clomiphene 50 mg every other day and 553 on gel. The 2026 meta-analysis found no overall difference from gel, with injections higher. [65], [32], [38]

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Clomiphene vs testosterone therapy

Testosterone before and after treatment

Median total testosterone, 31 men per group (Ramasamy 2014). Bars run from 0 to 1,200 ng/dL; the paler part is the starting level. The injection bar stops at 1,000 because the study abstract prints both 1,104 and 1,014.

Clomiphene

247 → 504 ng/dL (about 17.5 nmol/L)

Testosterone gel

230 → 412 ng/dL (about 14.3 nmol/L)

Testosterone injections

224 → over 1,000 ng/dL (about 35 nmol/L or more)

Red blood cells

188 men on clomiphene vs 175 on testosterone therapy (Wheeler 2017).

ClomipheneTestosterone therapy

Average hematocrit change

+0.6 vs +3.0 percentage points

Men with polycythemia (too many red cells)

1.7% vs 11.2%

Groups differed: mean age 38 vs 51.5; mean treatment 9.2 vs 19.6 months.

Observational clinic comparisons, not randomized trials; groups differed in age and treatment length.

How should clomiphene be stored?

Store tablets at room temperature in a closed container, away from heat, light and moisture. Each product sets its own range, so the label on your pack is the final word. The labels give no separate in-use period for opened packs, so use the tablets by the expiry date on the pack. [1], [16]

[1], [23], [16], [11], [13]

The UK tablets contain lactose, and the US Clomid tablets contain lactose and sucrose, which matters for people who must avoid them. For carrying tablets on a trip, see traveling with testosterone. [11], [1]

What does clomiphene do to fertility, estrogen and red blood cells?

These three effects are where clomiphene differs most from testosterone therapy. Each has its own hub guide; here is what is specific to clomiphene.

Fertility. Clomiphene raises FSH instead of switching it off, so it does not shut down sperm production the way testosterone does; in a large UK clinic cohort, men on clomiphene alone had higher LH and FSH at 6 months. It is not a guarantee, though (fertility evidence). See TRT and fertility. [58]

Estrogen. Estradiol rises along with testosterone, because some testosterone is converted into estradiol. In men on long-term 25 mg a day, median estradiol rose from 17 to 34 pg/mL (about 62 to 125 pmol/L), and in a Canadian fertility cohort it rose by 53.9 pmol/L (about 15 pg/mL). No guideline sets an estradiol target for men on clomiphene (how sources handle it). See estrogen on TRT. [52], [66]

Red blood cells. Hematocrit, the share of blood made of red cells, barely moves. In a multi-clinic comparison, hematocrit rose by an average of 0.6 percentage points on clomiphene against 3.0 on testosterone therapy, and polycythemia (too many red cells) affected 1.7% of 188 men on clomiphene against 11.2% of 175 on testosterone; the clomiphene group was younger and treated for a shorter time. In a VA records study of 2,518 matched pairs, coded polycythemia was 1.07% on clomiphene and 2.22% on testosterone. Low is not zero. One case report describes a man switched from testosterone injections to clomiphene after his red cell count rose too high, with normal free testosterone restored. See hematocrit on TRT. [67], [68], [69]

What do we actually know about clomiphene in people?

That clomiphene raises testosterone, LH and FSH in men with working testicles is settled; randomized trials show it consistently. Whether that makes men feel better is far less certain, and there is no long-term randomized trial in men at all. [4], [3]

Which placebo-controlled trials have tested clomiphene in men?

Two active-comparison trials add to this: clomiphene raised testosterone more than anastrozole in 26 infertile men over 12 weeks, and in 282 men who wanted to keep fertility, clomiphene, hCG and both together raised testosterone similarly over 3 months, with symptom scores improving most on the combination. [20], [71]

Can testosterone rise without feeling better?

Yes, and this is the most important thing to know about clomiphene. The placebo-controlled trials above mostly found no clear gain in sexual function, and a 2020 review concluded that clomiphene and tamoxifen "should not be used in routine clinical practice" to treat sexual symptoms in men whose low testosterone comes from the brain or pituitary. [70], [46], [72]

Uncontrolled clinic studies are more positive, which is what you would expect without a placebo group: 75% of 178 men said sexual function improved, 67% of 18 men in an endocrinology series felt better, and 74% of the Dutch cohort reported fewer symptoms. But measured scores tell a mixed story even there. In a Japanese cohort, an overall symptom score improved while the sexual-function score did not, and in a US cohort of 77 men, a general symptom questionnaire improved while an erection score did not. [73], [74], [19], [34], [75]

Compared with testosterone therapy, libido does worse:

• The 2026 meta-analysis found lower libido scores on clomiphene than on TRT (3 studies, 199 men). [38]
• In an age-matched comparison, overall satisfaction was similar, but men on injections reported more libido. [65]
• In a small prospective study, the libido score fell on clomiphene (from 3.75 to 3.2) while symptoms improved overall. [76]
• Of 41 men who switched from clomiphene to nasal testosterone because of low libido, 38 reported better libido at similar testosterone levels, with lower estradiol. That group was selected for being unhappy on clomiphene. [77]

Why this happens is not known. Proposed explanations include the rise in estradiol, zuclomiphene's estrogen-like effects and clomiphene's blocking of estrogen receptors in the brain; none has been tested directly. The practical point: a good testosterone number on clomiphene is not proof of benefit, so symptoms deserve their own record.

What do the long-term studies show?

• Krzastek 2019: 400 men, 120 of them treated for more than 3 years (up to 7). Of the long-term group, 88% had normal testosterone, 77% reported better symptoms and 8% reported side effects; no serious adverse events. [22]
• Huijben 2023: 153 men in a Dutch hospital, followed up to 8 years. Testosterone rose from 9 to 16 nmol/L; 10% reported side effects; 33% stopped in the first year. [19]
• Moskovic 2012: 46 men with testosterone of 612, 562 and 582 ng/dL at 1, 2 and 3 years, and improved bone density scores. [78]
• Katz 2012: 86 young men (average age 29); testosterone and gonadotropins rose, and 70% were on 25 mg every other day at their last visit. [79]

All four are clinic records without a comparison group, so they show what happened to men who stayed on clomiphene, not what it would do for everyone.

What do the big records studies show?

In US insurance claims for 12,318 men prescribed clomiphene, 52% had a male-infertility diagnosis and no clear rise in reported side effects appeared. A 2026 VA study of 2,518 matched pairs of veterans found lower coded rates on clomiphene than on testosterone for polycythemia (1.07% vs 2.22%), new high blood pressure (6.04% vs 10.48%) and stroke (0.52% vs 1.43%), but also far fewer deaths (1.83% vs 10.13%), a gap too large to be a drug effect, which shows how differently the groups were chosen. Records studies like this cannot show which treatment is safer for the heart; for testosterone's randomized heart data (the TRAVERSE trial), see blood clots and heart events. [59], [68]

How does clomiphene work?

In men, clomiphene works through the brain rather than the testicles. It competes with estrogen for the estrogen receptors in the hypothalamus and pituitary. With the estrogen signal blocked, the hypothalamus releases more GnRH, the pituitary releases more LH and FSH, the Leydig cells in the testicles make more testosterone, and FSH acts on the Sertoli cells that support sperm. In a 2025 review of randomized trials of clomiphene and enclomiphene, LH was about 4.7 IU/L higher and FSH about 4.6 IU/L higher than on placebo. [2], [3], [4]

Why it needs a working system. Every step depends on the one before it. If the testicles cannot respond (usually with a high LH already) or the pituitary is damaged, raising the signal does nothing useful. [5], [6]

Why estradiol rises. Clomiphene blocks estrogen's action in the brain, not its production. More testosterone means more conversion to estradiol by the enzyme aromatase, so blood estradiol goes up. [52], [20]

A new signal. In a small 2025 study, IGF-1, a marker of growth hormone activity, fell in 15 of 20 men on clomiphene, and in 2 it fell well below the normal range for their age. What that means for health is not known. [80]

What are the risks and unanswered questions?

Is clomiphene safe?

In the published studies, side effects were uncommon and mild, but the evidence has real gaps. Pooled studies report side effects in fewer than 10% of men and no serious adverse events. Missing are a long-term randomized trial in men, rates for rare harms such as clots, and a clear picture of the mood and sexual effects men describe online. [81], [22], [19], [3]

What side effects are reported in men?

The US label's side-effect table comes from 8,029 women taking short ovulation courses, so it says little about men. [1] In men, the counts come from clinic cohorts:

• Dutch cohort (153 men): side effects in 16 (10%): hot flushes 5, agitation 4, visual changes 2, nipple tenderness 2 and mood change 1. [19]
• Long-term US cohort (120 men on it for more than 3 years): mood changes 5, blurred vision 3 and breast tenderness 2. [22]
• Reviews also list headache, dizziness, breast growth (gynecomastia) and worsening of existing psychiatric illness. [82]

The UK product information adds anxiety, depression, mood swings, irritability, nervousness and insomnia, all with frequency not known, and very rare hair thinning. [11]

Can clomiphene cause vision problems?

Yes. Vision changes are uncommon but are the labels' main warning, and they can occasionally be permanent. The US label describes blurring, spots or flashes that become more common with a higher total dose or longer use, and says they are usually reversible, but prolonged cases have been reported, some starting after clomiphene was stopped, and some may be irreversible. The UK label adds that symptoms often appear in bright light, can make driving riskier, and rule out further use in anyone who has had a clomiphene-related vision disorder. Both labels say to stop at once and have a full eye exam. [1], [11]

Male studies record visual changes in 2 of 153 and blurred vision in 3 of 120 men. Case reports in men include sudden vision loss from optic nerve damage after 2 weeks of 100 mg a day, and a blocked retinal vein in a man carrying the clotting gene variant factor V Leiden. [19], [22], [83], [84]

Can clomiphene affect mood and sleep?

Yes, in some men, though no trial in men gives a rate. Mood change was the most common side effect in the long-term US cohort and agitation the second most common in the Dutch cohort, the UK label lists anxiety, depression, mood swings and insomnia, and one case report describes mania in a man with a psychiatric history after 6 months of 25 mg a day. Mood and sleep complaints are also the most common theme in public forums (community reports). People with a history of depression, anxiety or bipolar disorder have a reason to discuss this before starting. Both the US and UK labels also list rare psychotic reactions from reports after approval, without a rate. [22], [19], [11], [85], [1]

Does clomiphene cause blood clots?

Rarely, as far as anyone knows, but no rate exists for men. The European urology guideline says SERMs "could predispose" men to clots in the veins (venous thromboembolism) and that patients should be warned, although data are lacking. Case reports in men describe a lung clot after 2 years of treatment for low testosterone, a clot in the veins of the brain after 3 weeks, and the retinal vein blockage above; in the Dutch cohort, one man with a past leg clot developed a lung clot in his fourth year. A "less than 1%" figure sometimes quoted rests on a single case report. [5], [86], [87], [84], [19], [7]

The labels themselves list clot-related events from reports after approval, with no rate and no split by sex. The US label lists pulmonary embolism (a clot in the lungs), thrombophlebitis (vein inflammation with a clot), stroke and retinal thrombosis (a clot in the eye), and the UK label lists stroke and cerebral thrombosis (a clot in the brain). [1], [11]

For comparison, the European regulator counted 4 clot-related events among 1,403 men who took enclomiphene in its trials (one leg vein clot with a lung clot, two leg vein clots and one fatal stroke, all in men with other risk factors), against 1 heart attack on placebo and none on testosterone. The report text does not give the size of the placebo and testosterone groups. The events were one of the reasons it refused approval. [88]

Testosterone has its own randomized heart evidence. TRAVERSE compared daily testosterone gel with placebo gel in about 5,200 men aged 45 to 80 with low testosterone and existing heart disease or high heart risk (2,596 men on testosterone, 2,602 on placebo). Heart attack, stroke or heart death occurred in 7.0% on testosterone and 7.3% on placebo (hazard ratio 0.96, a measure of relative risk), meeting its safety margin, while atrial fibrillation (3.5% vs 2.4%), acute kidney injury (2.3% vs 1.5%) and lung clots (0.9% vs 0.5%) were more common on testosterone. It tested only a gel, men used it for 21.7 months on average and about 61% stopped early. Clomiphene has no comparable trial, so these results do not transfer to it. See TRT and heart health. [89], [90]

What about bone, cholesterol and the testicles?

• Bone. Results conflict. Bone density scores improved over 3 years in one cohort, the US academic pathway saw no change at 3 years with scans every 2 years, but spine density fell in 21 younger men on clomiphene or anastrozole (the study pooled the two). The European urology guideline says long-term SERM use can reduce bone density. [78], [7], [91], [5]
• Cholesterol. HDL cholesterol fell against placebo in the 12-week trial in men with obesity. [26]
• Testicular tumors. The US label notes testicular tumors reported in men and says the cause is not known. One 1985 report found 2 tumors among 650 men treated for low sperm counts; cause and effect were never established. [1], [27]

Is clomiphene legal? Is it FDA approved?

Checked September 2026. Rules differ by country and change often.

United States. Clomiphene is FDA-approved for ovulation problems in women (since 1967) and prescription-only. It is not on the Drug Enforcement Administration's controlled-substance list, and DailyMed lists it with no DEA schedule. Current products are generics and Clomid, now sold under a generic application; Serophene is discontinued. Prescribing it to men is legal off-label use. FDA's shortage data list no clomiphene shortage. [7], [15], [16], [9], [10], [92]

Canada. No clomiphene product is marketed. All four products ever listed, including Clomid and Serophene, are cancelled; the last, Clomid, on July 15, 2020. [14]

United Kingdom. Clomifene is a prescription-only medicine licensed for ovulation problems in women; the only current product information on the UK medicines compendium is for a generic 50 mg tablet. [11], [12]

Australia. Clomid is a Schedule 4 (prescription-only) medicine. The national subsidy scheme (PBS) covers it only for women's infertility and IVF, at a full price of A$35.38 for 10 tablets and a general patient charge of A$25.00. [13], [93]

European Union. Rules are national, and member states were not checked for this guide. The European Medicines Agency refused approval for enclomiphene in 2018. [94] See TRT in Europe.

A "research use only" label on clomiphene sold online does not make it legal, tested or the same as a licensed product.

Is clomiphene banned in sport? Does it show up on a drug test?

Yes. Clomifene is named in class S4.2 (anti-estrogenic substances) of the World Anti-Doping Agency (WADA) Prohibited List, banned in and out of competition, and the 2027 list keeps it banned from January 1, 2027. It is detectable for a long time: after 30 days of 50 mg a day, zuclomiphene stayed in the urine for 121 to more than 261 days. [17], [95], [61]

Who should be especially cautious?

• Men with vision problems, or a past vision disorder on clomiphene. A past clomiphene-related vision disorder rules out further use on the UK label. [11]
• Men with liver disease or a pituitary tumor. Both are contraindications on the US label, which also rules it out with uncontrolled thyroid or adrenal problems. [1]
• Men with a history of blood clots or a clotting disorder. The European urology guideline warns of a possible clot risk. [5]
• Men with depression, anxiety or other psychiatric illness. Mood effects are listed on labels and in reviews. [11], [82]
• Men whose testicles do not work (high LH with low testosterone). Clomiphene is unlikely to help. [18]
• Pregnancy. Clomiphene is contraindicated in pregnancy; these guides are for men. [1]
• Teenagers. No study supports use under 18; treatment of delayed puberty is specialist care.
• Drug-tested athletes. Banned at all times. [17]
• People taking other medicines; see the next question.

Can clomiphene be taken with other medicines?

No drug interactions are documented on the US label, and the UK label says "none known", but that mainly reflects how little has been studied. Clomiphene is activated by the liver enzyme CYP2D6, so medicines that strongly block that enzyme (some antidepressants, for example) could in theory change its effect; no study in men has tested this. [1], [11], [63], [64]

In practice, clomiphene is often combined with hCG or anastrozole in fertility care, and the combinations are covered above (estradiol, after TRT). Bring a full list of everything you take, including supplements, to a pharmacist or prescriber.

Is clomiphene available, and what does it cost?

Checked September 2026.

In the United States, 50 mg generic tablets are widely available from many makers. As a reference point, the average price US pharmacies paid for generic clomiphene 50 mg in September 2026 was about $4.21 per tablet; at 25 mg every other day, a month uses about 7 to 8 tablets. What you pay depends on the pharmacy and any insurance. In Australia the PBS subsidy applies only to women. In Canada it is not marketed. [8], [96], [93], [14]

What should be monitored while using clomiphene?

No label gives monitoring rules for men, so the numbers come from the AUA and the US academic pathway. Use this summary to prepare questions for your prescriber; it is not a personal testing plan. [18], [7]

[18], [7], [1], [11], [35], [75]

Write down the timing. Note the date you started, your dose and schedule, and any change before each blood test. Because testosterone rises over weeks, a result means little without that context. See TRT blood work.

What do people in public communities report?

Public forums hold every kind of clomiphene story: men whose testosterone doubled and who felt like themselves again, men whose numbers rose while nothing else changed, and men who stopped because of mood, sleep, vision or sexual side effects. The accounts below come from public Reddit threads posted between September 2025 and September 2026 and are described without identifying anyone.

What do the positive reports look like?

The most convincing good reports include lab results and a follow-up.

• Hormones and fertility together. A man in his 30s with low LH who wanted children took 25 mg a day. After a month his total testosterone had gone from 360 to 860, with LH and FSH roughly doubling; he later described feeling more social and having more night-time erections, and said a repeat semen test had improved. [97]
• A pregnancy after years of trying. One man took clomiphene for a year and a half to improve his semen: his testosterone went from 230 to 710, he felt well, and his partner conceived. His thread gives no semen numbers. [98]
• Long-term, with mixed goals met. After two and a half years on 25 mg a day, one man reported testosterone of 839 ng/dL, hematocrit of 45.9% and better sexual function, but little of the muscle progress he had hoped for. [99]
• Credit shared with lifestyle. A man in his 30s on 50 mg a day went from 203 to 640 in three months and felt more energetic and motivated, and he said himself that regular exercise, better food and sleep deserved much of the credit. [100]

Why do so many say the numbers went up but they feel the same?

This is the most common story, and it matches the trials (numbers vs symptoms).

• A man in his 30s saw testosterone rise from 275 to about 700 ng/dL over two and a half months, but an early lift faded after a couple of weeks. [101]
• A man in his 20s reached 1,368 ng/dL, with estradiol of 110.3 pg/mL, after three months and felt no meaningful improvement. [102]
• On 25 mg every other day, another man went from 222 to 686 at six weeks; several symptoms improved strongly for two to three weeks and then partly faded, though he still felt better than before. [103]
• Two men, one in his 20s and one in his 60s, reached 830 and 616 ng/dL but barely felt different, and both were switching to testosterone therapy. [104], [105]

Replies often point to other causes worth checking first, such as sleep apnea, weight, stress and antidepressants.

What sexual side effects do men describe?

Loss of libido and weaker erections are the most alarming reports, sometimes despite high testosterone.

• After switching from testosterone gel to 25 mg a day, one man described a profound loss of sex drive, erection problems and low mood at a testosterone level of 1,002 ng/dL; his libido came back about a week after he stopped. [106]
• Another, on 25 mg a day for fertility after testosterone cream, had a strong rise in libido around month 4, then a fall, and by month 6 no sex drive and new erection problems; three weeks after stopping, function had only partly returned, and a short course of anastrozole in the middle makes the timeline hard to read. [107]
• Two men describe severe effects that lasted months: one, after three months of 25 mg, reported loss of libido, erection problems, emotional numbness and suicidal thoughts, still with erection problems 8 months after stopping; the other said his symptoms began about three months after stopping 25 mg every other day and eased from about 8 months. Neither thread includes lab results. [108], [109]
• On 50 mg every other day, one man felt less anxious and stronger, with testosterone in the 800s, but noticed much less semen and occasionally could not ejaculate. [110]

These accounts cannot prove cause, but they line up with the trial finding that libido does worse on clomiphene than on testosterone. Suicidal thoughts on any medicine need urgent medical help.

What about mood, anxiety and sleep?

Forum users call the mood effects the "Clomid crazies".

• A man in his 30s whose testosterone rose from 9.6 to 28 nmol/L described low mood, emotional blunting and brain fog, and his doctor switched him to hCG. Another, taking it alongside testosterone injections, described swings between crying, anger and elation that a lower dose did not fix. [111], [112]
• Early waking is a recurring complaint: one man woke at 2 to 3 a.m. and could not get back to sleep after his testosterone rose from 275 to 700, another woke at 4 a.m. on each of his first five days at 12.5 mg (he had had insomnia before), and a third reported broken sleep and night sweats as early benefits faded at two months. [113], [114], [115]
• One man stopped 50 mg every other day after three months of anxiety, insomnia and fatigue, despite initially better sexual function, and still felt unwell two weeks later. [116]

What do people report about vision?

Reports are fewer but the most consistent in what happens next: people stop.

• After stopping TRT, one man took 25 mg for fertility and noticed trails behind moving objects by the third dose and blurry vision by the fourth; both were unchanged a week after stopping. He had a pre-existing visual condition, which makes the cause uncertain. [117]
• A man in his 20s stopped after ten weeks of 50 mg every other day because of possible vision changes, even though his testosterone had risen. [118]
• A man on 50 mg a day stopped after nine days of intense anxiety, chest pain and visual disturbance. [119]

Replies in these threads urge stopping and seeing an eye doctor, which is what the labels say.

What about estradiol, breasts and water retention?

In two months on 25 mg a day, one man's testosterone went from 224 to 963 ng/dL and his estradiol from 18 to 94.8 pg/mL; energy and erections improved, libido did not, and breast sensitivity appeared, then went away when he moved to 25 mg every two days. Others describe nipple tenderness and water weight that a lower dose did not fix, or joint discomfort after adding anastrozole while estradiol stayed high. [120], [121], [122]

What happens when men combine it with TRT, or use it after TRT?

• A man on testosterone 100 mg a week added low-dose clomiphene to protect fertility: his total testosterone rose from about 580 to 830, but LH and FSH stayed undetectable, so the pituitary signal clomiphene is meant to raise did not return. [123]
• After stopping TRT because of a low sperm count, a man in his 40s took 25 mg every other day for three to four years: his sperm count recovered and testosterone sat near 1,000, but his libido and erections stayed poor. [124]
• Another man who stopped 18 months of injections to plan a child felt wiped out three weeks into 25 mg a day, shortly after a bout of COVID. [125]

How can you judge a clomiphene story?

Ask: What dose, how often and for how long? Were testosterone, LH and estradiol measured before and after, and sperm if fertility was the goal? What else changed at the same time, such as stopping TRT, adding anastrozole or hCG, weight loss or new training? What happened months later?

These selected discussions show what people experience and the questions research should answer. They are not a survey of all users, a success rate or a substitute for the studies.

How does clomiphene compare with other options?

These are the options most often weighed against clomiphene. Status was checked in September 2026.

No trial ranks these on long-term outcomes. The choice usually turns on fertility plans, whether the pituitary and testicles still work, and how much a rise in estradiol or red blood cells matters. See the hCG, gonadorelin and enclomiphene comparison for the fertility medicines side by side.

Common questions about clomiphene

Is clomiphene the same as TRT?

No. TRT gives you testosterone from outside and switches off your own production, including the signal for sperm. Clomiphene is a tablet that makes your own body produce more testosterone by blocking estrogen's feedback in the brain, so LH and FSH go up instead of down. It raises testosterone to levels similar to gel, but only when the testicles and pituitary still work, and libido improves less on average than with TRT. [4], [38], [5] See what clomiphene is.

What is the usual clomiphene dose for men?

There is no labeled dose for men. The AUA guideline lists 25–50 mg by mouth every 1–2 days, and the two published clinic protocols start at 25 mg (half a 50 mg tablet) every other day and go up to 50 mg every other day, or daily, if testosterone stays low; 50 mg every other day was the most common start in a larger clinic record. The first blood test comes no sooner than 4 weeks after starting. Trials mostly used 25 or 50 mg a day. [18], [7], [19], [53] See typical protocols.

Why is my testosterone higher on clomiphene but I don't feel better?

This is common. Placebo-controlled trials mostly found no clear improvement in sexual function even though testosterone rose, and libido improves less on clomiphene than on testosterone therapy. Possible reasons include the rise in estradiol and clomiphene's effects on estrogen receptors in the brain, but none is proven. Other causes of the symptoms, such as sleep apnea, stress or medicines, are worth ruling out too. [70], [38], [77] See numbers vs symptoms.

Will clomiphene keep or improve my fertility?

It usually keeps sperm production running, because it raises FSH instead of switching it off, and average sperm counts rise in studies. But counts fell in 29% of men in one cohort, and the largest placebo-controlled trial found no increase in pregnancies. A semen analysis, not a testosterone result, shows what is happening. [42], [35], [30] See fertility.

Can clomiphene cause permanent vision problems?

Rarely, yes. The labels say vision changes such as blurring, spots or flashes are usually reversible but can occasionally last or be permanent, especially at higher doses or with longer use. Any visual symptom means stopping and getting a full eye exam, and a past clomiphene-related vision disorder rules out using it again on the UK label. [1], [11] See vision problems.

How soon will I notice a difference on clomiphene?

Testosterone usually rises within weeks, and the AUA checks it no sooner than 4 weeks after starting. In an endocrinology clinic series, average testosterone rose from 7.6 to 19.3 nmol/L (about 220 to 560 ng/dL) by the first check at 6 to 8 weeks, and in a 40-day study 92% of 75 men were above 300 ng/dL (about 10.4 nmol/L). No study has timed when symptoms change, and in placebo-controlled trials they often changed little. [18], [74], [28] See numbers vs symptoms.

Can I take clomiphene while on TRT?

It is sometimes prescribed that way, but testosterone switches off the pituitary signal that clomiphene is meant to raise, and the US infertility guideline calls the evidence for adding medicines to testosterone to protect fertility too limited to recommend. [2], [58] See clomiphene with TRT and TRT and fertility.

What is the difference between Clomid and enclomiphene?

Clomid (clomiphene) contains two forms: enclomiphene, which blocks estrogen, and zuclomiphene, which acts partly like estrogen and lingers for weeks. Enclomiphene is the first form on its own. In one observational study, estradiol rose less and side effects were less common on enclomiphene. Clomiphene is an approved medicine used off-label; enclomiphene is not approved anywhere. [1], [52], [62], [94] See enclomiphene.

Glossary

Plain explanations of the medical, dosing and research terms used in this guide. Underlined terms in the text link here.

Adverse event

A harmful or unwanted medical event reported after someone used a treatment. A report alone does not prove the treatment caused it.

Aromatase inhibitor

A medicine, such as anastrozole, that blocks the enzyme that turns testosterone into estradiol.

Azoospermia

No sperm at all in a semen sample.

Controlled substance

A medicine whose prescribing and possession are restricted by law because it can be misused. Testosterone is one in the US; clomiphene is not.

Controlled trial

A study that compares people who receive a treatment with a similar group who do not, often receiving a placebo instead. Randomly assigning people to each group makes the comparison fairer.

Crossover trial

A trial in which each person takes the treatment and the placebo in turn, so everyone is compared with themselves.

Dose (amount each time)

The amount given on one occasion. A protocol lists both the dose and how often it is given.

Estradiol

The main form of estrogen. In men it is made mostly from testosterone, so it rises when clomiphene raises testosterone.

Estrogen receptor

The docking site estrogen uses to switch on a cell. Clomiphene occupies these receptors in the brain so estrogen cannot use them.

FSH (follicle-stimulating hormone)

A pituitary hormone that acts on the Sertoli cells in the testicles and is needed for sperm production. Clomiphene raises it; testosterone therapy lowers it.

GnRH (gonadotropin-releasing hormone)

The brain signal that tells the pituitary to release LH and FSH. Gonadorelin is a medicine that copies it.

Gynecomastia

Growth of breast tissue in men, often tender at first. It is linked to a higher estrogen-to-testosterone balance.

Half-life

The time it takes for the level of a substance in the blood to fall by half. The AUA gives clomiphene 5–7 days; its zuclomiphene part lingers longer. It is not the same as how long an effect lasts.

Hematocrit

The share of the blood made up of red blood cells. Testosterone therapy can raise it; clomiphene barely changes it.

Hypogonadotropic hypogonadism

Low testosterone because the brain and pituitary send too little LH and FSH to the testicles. It can be present from birth or start later. Also called secondary hypogonadism.

Isomer

One of two or more forms of a molecule with the same atoms arranged differently. Clomiphene is a mix of two isomers, enclomiphene and zuclomiphene, which act differently.

Leydig cells

Cells in the spaces between the testicle's tubules that make testosterone when LH reaches them.

LH (luteinizing hormone)

A pituitary hormone that tells the testicles to make testosterone. Clomiphene raises it; testosterone therapy switches it off.

Meta-analysis

A study that pools the results of several earlier studies to get a larger, more precise answer. Its quality depends on the studies it pools.

Off-label

Use of an approved medicine for a condition, group or dose its label does not cover, such as clomiphene in men.

Post-cycle therapy (PCT)

Drugs taken after an anabolic-steroid cycle to try to speed the return of the body's own testosterone, usually SERM tablets and sometimes hCG. The schedules used online have not been tested in trials.

Pharmacokinetics

How the body absorbs, moves, breaks down and removes a substance.

Placebo

A dummy treatment with no active ingredient, used as a comparison in studies.

Polycythemia (erythrocytosis)

Too many red blood cells, shown by a high hematocrit. It is much less common on clomiphene than on testosterone therapy.

Primary hypogonadism

Low testosterone because the testicles themselves do not work well, even though the pituitary sends plenty of LH and FSH. Clomiphene is unlikely to help.

Schedule 4 (Australia)

Australia's prescription-only medicine category. Clomiphene is listed there.

Sertoli cells

Cells lining the testicle's tubules that support developing sperm. They respond to FSH and to the high testosterone level inside the testicle.

SERM (selective estrogen receptor modulator)

A tablet, such as clomiphene, enclomiphene or tamoxifen, that blocks estrogen's feedback in the brain so the pituitary releases more LH and FSH.

Subcutaneous (SC)

Injected into the fatty layer just under the skin. hCG is often given this way.

Tachyphylaxis

A response that fades while a medicine is still being taken. For clomiphene in men there is no standard definition and no measured rate.

Titration

Adjusting a dose in steps, usually based on blood tests and symptoms.

TRT (testosterone replacement therapy)

Prescribed testosterone, by injection, gel or other forms, for men with low testosterone. It switches off the brain's LH and FSH signals.

Venous thromboembolism (VTE)

A blood clot in a vein, such as in the leg (deep vein thrombosis), that can travel to the lungs (pulmonary embolism).

WADA

The World Anti-Doping Agency, which publishes the list of substances banned in sport. Clomiphene is banned at all times.

Weekly total

All the amounts taken in one week, added together. For example, 25 mg every other day is about 3.5 doses, or 87.5 mg, a week.

How this guide was researched

This guide is built from a thorough review of the sources cited throughout it: product labels and regulator records from the United States, the United Kingdom, Australia and Canada, clinical guidelines from the United States, Canada, the United Kingdom and Europe, published clinical trials and studies, and government price and product data. We also reviewed public online forums where men describe their own experiences with clomiphene.

The guide cites 129 sources, including 9 product labels and leaflets, 10 clinical guidelines and position statements, and 55 original studies and case reports in people, plus 29 public community threads. Each type of source answers a different question. Labels and guidelines show what is approved and what clinicians are told to do. Trials and studies show what was measured, and in whom. Personal accounts show what individual people experienced. Every numbered citation links to its entry below, labeled by source type.

How this guide was made

Research and drafting were AI-assisted. Every cited source was checked against the original, and the guide was reviewed and edited by Doserly before publication. It has not had an independent clinical review, and Doserly does not currently have medical reviewers. Doserly makes a medication and health-tracking app and runs Doserly Academy, both of which are promoted in this guide. Read our editorial policy for how guides are researched, updated and corrected.

This guide is for educational purposes. It summarizes what the reviewed sources report so the research is easier to understand; it is not medical advice. For a deeper dive, or to check any point for yourself, go straight to the cited sources.

Explore the sources