Raise your testosterone naturally. Keep your fertility intact.
Two massive studies — one tracking nearly 29,000 men, another following over 500,000 — found something that changed how physicians think about tadalafil entirely. Men who took it regularly didn’t just have better sex lives. They had measurably longer, healthier ones. Here’s what the science actually shows.
At Obsidian Genetics, we offer physician-supervised tadalafil — one flat monthly price, personalized dosing, and ongoing provider support built in.
No waiting rooms. No pharmacy lines. Complete your intake online in minutes, and if prescribed, your medication ships directly to your door. Your provider adjusts your dose over time at no extra charge — because getting it right is part of the program.
Whether you’re treating erectile dysfunction, managing BPH, or simply investing in long-term cardiovascular and cognitive health, tadalafil may be one of the most studied and well-tolerated tools available.
Enclomiphene
Raise testosterone through your body's own system. Without suppressing it.
Enclomiphene clinical data demonstrates meaningful testosterone restoration with preservation of the HPG axis.
Enclomiphene citrate is not FDA-approved for testosterone deficiency. Use is off-label, supported by clinical trial data. Individual results vary based on baseline hormone levels and cause of hypogonadism.
Enclomiphene works upstream. At the brain, not the bloodstream.
Rather than introducing testosterone directly, enclomiphene tells your body's own control system to produce more. The difference matters — both medically and for your long-term hormonal health.
Estrogen Receptor Blockade at the Hypothalamus
Enclomiphene is a trans-isomer of clomiphene and acts as a Selective Estrogen Receptor Modulator (SERM). At the hypothalamus and anterior pituitary, it blocks estrogen receptors — preventing estrogen from delivering its normal feedback signal that tells these glands to reduce hormone output. With that feedback signal blocked, the hypothalamus increases GnRH (gonadotropin-releasing hormone) secretion, which is the upstream trigger for the entire testosterone production cascade.
LH and FSH Elevation Drive Testicular Output
Increased GnRH from the hypothalamus stimulates the pituitary to release more LH (luteinizing hormone) and FSH (follicle-stimulating hormone). LH acts directly on the Leydig cells of the testes — the cells responsible for testosterone production — stimulating them to synthesize and release more testosterone. FSH simultaneously supports Sertoli cell function and spermatogenesis. Both signals are elevated, restoring the full endocrine cascade.
Endogenous Production — Not External Replacement
The key distinction from TRT: your testes are producing the testosterone, not receiving it from outside. This means the HPG axis remains active and functional, spermatogenesis continues, and testicular volume is maintained. If enclomiphene is stopped, the natural system resumes its prior state. There is no suppression to recover from — a meaningful advantage for men who may want to cycle protocols or plan for fertility in the future.
Who enclomiphene is right for.
Enclomiphene works through your body's system. Results build over weeks.
HPG Axis Activation
LH and FSH begin rising within the first week of daily dosing. The testes respond by increasing testosterone synthesis. Symptom changes at this stage are subtle as hormone levels are still stabilizing.
Testosterone Climbing
Total testosterone continues to rise as the LH signal to the Leydig cells becomes established. Many men begin noticing improvements in energy, libido, and mood during this window. Lab work at week 4–6 confirms hormone response.
Stable Optimization
With consistent daily dosing, testosterone levels stabilize in the target range. Energy, body composition, libido, and mood improvements consolidate. Follow-up labs confirm you are in range and guide any dose adjustment.
Sustained Benefit
Long-term enclomiphene use continues to support testosterone in the normal range. Because the mechanism is hormonal stimulation rather than replacement, the system remains active and responsive throughout treatment.
Safety profile and what to monitor.
Enclomiphene is generally well tolerated at therapeutic doses. Labs before starting and follow-up monitoring are required.
Common and Expected Effects
Mild headache and nausea can occur when starting, typically resolving within the first 1–2 weeks. Some men notice mood changes during the initial weeks as estrogen receptor signaling adjusts. These effects are generally transient and mild at the doses used for testosterone stimulation.
Visual Symptoms — Rare but Important
SERMs as a class carry a small risk of visual disturbances, including blurred vision or light sensitivity. This is a class-level effect seen primarily with clomiphene and at higher doses. If you experience any visual changes while on enclomiphene, discontinue and contact your provider immediately. Visual changes are reversible on discontinuation in most cases.
Who Should Not Use Enclomiphene
Men with primary hypogonadism, where the testes themselves are dysfunctional, will not respond meaningfully to enclomiphene, as stimulating LH and FSH cannot restore function in non-functional testes. Confirmed primary hypogonadism requires direct testosterone replacement. Lab work distinguishes these two diagnoses before prescribing.
Lab requirements and monitoring.
Enclomiphene requires baseline testosterone, LH, FSH, estradiol, and standard metabolic labs before initiation. Follow-up labs at 4–6 weeks assess hormone response and guide dose adjustment. Men with a history of liver disease, thromboembolic events, or hormone-sensitive conditions should discuss risks with their provider before starting. All Obsidian Genetics prescriptions include a full health history review by a licensed provider.
Frequently asked question
How is enclomiphene different from testosterone injections?
The fundamental difference is mechanism. Testosterone Cypionate (TRT) delivers external testosterone directly into your bloodstream, which raises your levels but suppresses your body’s natural production and pituitary signaling. Enclomiphene works upstream — it blocks estrogen receptors in the hypothalamus and pituitary, which triggers your own system to produce more LH and FSH, which in turn stimulates your testes to make more testosterone. The result is higher testosterone through your body’s own pathway, with your HPG axis remaining functional and your fertility preserved.
Will enclomiphene actually preserve my fertility?
Yes — this is one of enclomiphene’s most clinically significant advantages over TRT. Because enclomiphene stimulates FSH as well as LH, it supports Sertoli cell function and spermatogenesis alongside testosterone production. Clinical trials comparing enclomiphene to topical testosterone demonstrated that men on enclomiphene maintained or improved sperm parameters, while men on testosterone gel showed significant reductions in sperm count. If having children is a near or medium-term priority, enclomiphene is the more appropriate choice.
Is enclomiphene FDA-approved for low testosterone?
Not yet — enclomiphene completed Phase III clinical trials but has not received FDA approval specifically for male hypogonadism as of this writing. It is prescribed off-label based on the clinical trial data demonstrating its safety and efficacy in raising testosterone and preserving fertility in men with secondary hypogonadism. Clomiphene (the racemic mixture that includes enclomiphene as one of its isomers) has been widely used off-label for male hypogonadism for decades. Enclomiphene is the more selective and better-tolerated isomer.
What happens when I stop taking enclomiphene?
Because enclomiphene stimulates rather than replaces, stopping treatment allows the HPG axis to return to its prior baseline relatively quickly — typically within a few weeks. There is no suppression period to recover from, as there is with TRT. This is a meaningful advantage: if you stop enclomiphene, your body does not need time to “restart.” Testosterone levels will return to baseline, but the return to baseline is faster and less disruptive than stopping exogenous testosterone.
Can I use enclomiphene to recover from TRT?
Yes — enclomiphene (and clomiphene) are used as post-TRT recovery agents to stimulate HPG axis recovery after exogenous testosterone has suppressed natural production. After stopping TRT, the pituitary needs time to resume LH and FSH output; enclomiphene can accelerate this process. This is an emerging but well-established off-label use in men who are transitioning off TRT. Your provider can structure this as a bridge protocol if this is your situation.
Off-Label Use Notice: Enclomiphene citrate is not FDA-approved for the treatment of male hypogonadism or testosterone deficiency. It is prescribed off-label based on clinical trial data and established use in reproductive endocrinology. Obsidian Genetics prescriptions are issued following a clinical review of lab results and health history by a licensed physician.
Not Medical Advice: The content on this page is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Results are not guaranteed and individual outcomes depend on baseline hormone levels and the underlying cause of testosterone deficiency.
Citations: Enclomiphene efficacy and fertility preservation: Wiehle RD et al., Fertility and Sterility (2014). Comparative data vs. testosterone gel: Taylor F & Levine L, Journal of Sexual Medicine (2010). HPG axis mechanism: standard endocrinology reference (Boron & Boulpaep, Medical Physiology).
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