Clomid (Clomiphene Citrate) Dosage Guide: Research Protocols, Forms, and Timing

Clomid Dosage Varies by Clinical Indication

Clomiphene citrate in men is not a one-dose compound. The dose that achieves rapid HPG axis recovery after post-cycle suppression is different from the dose that optimises long-term testosterone production in a hypogonadal man, which is in turn different from the dose that maximises spermatogenic restoration without pushing estradiol to levels that impair sperm function. Understanding which indication applies to the individual is the necessary first step before selecting any dose. All three use cases share the same mechanism of hypothalamic estrogen receptor blockade leading to increased GnRH pulsatility and downstream gonadotropin elevation, but the therapeutic targets and the risk profiles vary enough to warrant distinct protocol designs.

The post-cycle therapy (PCT) use case requires the highest initial dose because the HPG axis has been acutely and profoundly suppressed by exogenous androgens, and the goal is rapid restoration of testicular testosterone production to prevent the symptomatic hypogonadal period (low energy, low libido, mood depression, muscle loss) that follows cessation of a steroid cycle. Ramasamy et al. (2014) documented recovery protocols in this population, supporting a front-loaded approach with higher initial doses that are tapered as HPG axis function recovers. Ramasamy et al., 2014, doi:https://pubmed.ncbi.nlm.nih.gov/24657837/ The typical PCT protocol begins 14 to 21 days after the last injection for long-ester compounds (testosterone enanthate or cypionate), or 5 to 7 days after the last injection for short-ester compounds, to allow exogenous androgen concentrations to fall sufficiently before beginning SERM therapy.

The testosterone optimisation use case described by Katz et al. (2012) used a conservative long-term approach: 25 mg every other day as the starting dose, with escalation to 50 mg every other day for men who did not achieve adequate testosterone normalisation. Katz et al., 2012, doi:https://pubmed.ncbi.nlm.nih.gov/22044663/ This conservative EOD dosing strategy minimises estradiol elevation while still achieving the 157% mean testosterone increase documented in the study. The 25 mg EOD dose is approximately one-quarter of the PCT starting dose, reflecting the very different physiological circumstances: in testosterone optimisation, the HPG axis is not acutely suppressed; it is chronically underperforming, and a gentle, sustained stimulus is more appropriate than the aggressive loading used in PCT recovery.

The fertility-specific protocol also uses 25 mg every other day but with a different priority. In the fertility context, the dose ceiling is imposed by the need to keep estradiol below a level that could impair sperm function. Estrogen receptors in the epididymis and on sperm cells play a role in sperm maturation and capacitation. While physiologic estradiol is necessary, supraphysiologic levels can impair these processes. For men attempting conception, the target is the lowest effective dose that raises FSH sufficiently to support spermatogenesis, rather than the dose that maximises testosterone. The 25 mg EOD fertility protocol achieves meaningful FSH elevation without the estradiol increases that higher doses would produce, optimising the hormonal environment for sperm quality.

Clomid Dosage Table: All Three Male Protocols

PCT Protocol: Timing, Loading, and Taper

When to Start PCT After a Steroid Cycle

The start time for PCT depends on the half-life of the androgens used in the cycle. For testosterone enanthate or testosterone cypionate (half-lives of approximately 8 and 12 days respectively), exogenous testosterone must clear from the bloodstream sufficiently before SERM therapy is initiated. Starting clomid while testosterone is still present at supraphysiologic levels produces no benefit, as the feedback suppression driving HPG axis inhibition is still active. The convention is to wait 14 to 21 days after the last injection of a long-ester compound. For testosterone propionate (half-life 2 to 3 days), PCT can begin 5 to 7 days after the last injection. For nandrolone decanoate (Deca), the extremely long half-life means waiting 3 to 4 weeks before starting PCT.

Loading Phase: 50 mg/day for 2 Weeks

The 50 mg/day starting dose is designed to produce rapid and substantial hypothalamic ER blockade, aggressively stimulating GnRH pulsatility and driving LH and FSH recovery within the first week. LH typically rises measurably within 5 to 7 days of starting 50 mg/day clomid, and serum testosterone begins recovering within 2 weeks. The 2-week loading duration is the standard used in most PCT protocols. Some practitioners extend the 50 mg phase to 4 weeks for men who had very long cycle durations or who show slow LH recovery on bloodwork at the 2-week mark.

Taper Phase: 25 mg/day for 2 to 4 Weeks

After the 50 mg loading phase, reducing to 25 mg/day allows continued HPG axis recovery while minimising estradiol elevation and side effect burden. By week 3 to 4 of PCT, the Leydig cells are already responding to elevated LH and testosterone is typically in the low-to-normal range. The taper phase maintains the HPG axis stimulus while giving the system time to re-establish its own feedback regulation. Most men complete PCT within 4 to 6 total weeks (2 weeks at 50 mg followed by 2 to 4 weeks at 25 mg). At the end of PCT, bloodwork confirms whether testosterone has recovered to baseline levels. If testosterone remains below 350 ng/dL at the end of the taper, extending the 25 mg phase or investigating for persistent hypogonadism is appropriate.

Testosterone Optimisation Protocol: Long-Term EOD Dosing

Starting at 25 mg EOD

The every-other-day dosing schedule used in the Katz 2012 study reflects a deliberate choice to avoid the higher daily estradiol levels that daily 25 mg dosing would produce. By dosing every other day, the hypothalamic ER blockade is intermittent rather than continuous, which produces a pulsatile rather than tonic GnRH stimulation pattern that more closely mimics the physiologic rhythm. The result is effective LH and FSH elevation without maximal estrogenic exposure. The standard starting dose is 25 mg every other day. Some practitioners use 25 mg daily as an alternative, accepting slightly higher estradiol in exchange for more consistent testosterone levels.

Escalation to 50 mg EOD

If bloodwork at 4 weeks shows total testosterone below 400 ng/dL and the LH response is present but insufficient, escalate to 50 mg EOD. The majority of men with secondary hypogonadism reach target testosterone at 25 to 50 mg EOD. A minority require daily 50 mg dosing for adequate response. If testosterone fails to normalise at 50 mg EOD after 8 weeks, this may indicate primary hypogonadism with impaired Leydig cell responsiveness, in which case the clomid approach alone may be insufficient and injectable testosterone or gonadotropin combinations should be considered.

Estradiol Management and Monitoring

Estradiol is the most important secondary monitoring parameter in all three clomid protocols. As testosterone rises, aromatase converts a fraction to estradiol. At target testosterone levels of 500 to 700 ng/dL, estradiol typically rises to 25 to 40 pg/mL, which is within the normal physiologic range for men and is not problematic. If estradiol exceeds 40 pg/mL and the individual experiences symptoms of estrogen excess (water retention, emotional lability, breast tenderness, reduced libido, erectile dysfunction), several management options are available. The primary option is dose reduction: reducing clomid dose reduces testosterone, which reduces aromatase substrate, which reduces estradiol. If dose reduction would compromise testosterone to below target levels, a low-dose aromatase inhibitor (anastrozole 0.25 to 0.5 mg twice weekly) can be added. Estradiol should not be suppressed to very low levels, as some estradiol is required for bone density maintenance, cardiovascular health, and libido.

Monitoring Bloodwork Protocol

• Baseline (before starting): Total testosterone, free testosterone, LH, FSH, estradiol (sensitive assay), hematocrit, PSA (if over 50), complete metabolic panel.
• 4 weeks: Total testosterone, LH, FSH, estradiol. Primary dose-adjustment timepoint.
• 12 weeks: Full panel repeat. Confirms steady-state response and checks for any emerging issues.
• Every 6 months (long-term): Full panel repeat for ongoing testosterone optimisation protocols.
• Post-PCT (end of PCT course): Total testosterone, LH, FSH. Confirms successful recovery before PCT is discontinued.

Frequently Asked Questions

Can I split Clomid tablets for lower doses?

Yes. The 50 mg clomid tablet can be split in half to achieve a 25 mg dose. Most 50 mg clomid tablets are round or oval and can be divided with a standard pill splitter. The split halves have equal pharmacological content if the tablet is evenly divided. This is the standard approach for achieving the 25 mg EOD dosing used in the testosterone optimisation and fertility protocols described in the Katz 2012 study. There is no pharmaceutical reason to prefer a 25 mg tablet over a halved 50 mg tablet for these protocols.

What time of day should I take Clomid?

The pharmacokinetics of clomiphene do not require strict timing. The compound has a half-life of 5 to 7 days for the enclomiphene component, meaning plasma levels are relatively stable regardless of whether doses are taken in the morning or evening. Most practitioners recommend morning dosing as a default to align with natural testosterone peaks and to minimise any potential effect on sleep quality from the mildly activating hypothalamic stimulation. For EOD dosing protocols, taking the dose on the same day-of-week schedule (for example, every Monday, Wednesday, and Friday) helps maintain consistency without requiring daily dosing calendar management.

How long until I feel the effects of Clomid?

Subjective improvements from clomid generally track with the testosterone recovery timeline. LH begins rising within 5 to 7 days of starting clomid at 50 mg/day (PCT protocol). Testosterone typically begins recovering by week 2 and reaches a new stable level by weeks 4 to 6 for PCT protocols. For testosterone optimisation protocols at 25 mg EOD, the testosterone response is slower and most men notice meaningful improvement by weeks 4 to 8. The subjective effects of testosterone restoration, including improved energy, libido, mood, and exercise recovery, typically follow the bloodwork improvement with a lag of 1 to 2 weeks. If bloodwork confirms testosterone normalisation but subjective symptoms have not improved, estradiol management or assessment of other contributing factors may be warranted.

How to Source Clomid in Canada

Elite Bio Supply provides Clomid (Clomiphene Citrate) 50 mg tablets in packs of 30 for research purposes. The 50 mg format accommodates all three male protocols: the 50 mg/day PCT loading phase used directly, or halved to 25 mg for the EOD testosterone optimisation and fertility protocols documented in the Katz 2012 and Moskovic 2012 research.

Related Guides

• Clomid for Post-Cycle Therapy
• Clomid for Secondary Hypogonadism
• Clomid for Testosterone Optimisation
• Clomid Side Effects in Men
• Where to Buy Clomid in Canada