Hims Testosterone SupportvsTestoFuel

The active ingredient is enclomiphene, a selective estrogen receptor modulator (SERM). It blocks estrogen receptors in the hypothalamus and pituitary, which the brain interprets as "estrogen is low." In response, the pituitary releases more luteinizing hormone (LH) and follicle-stimulating hormone (FSH), signaling the testicles to produce more of their own testosterone and to keep making sperm. This is fundamentally different from traditional testosterone replacement therapy (TRT), which adds testosterone from outside the body and can shut down the body's own production and reduce sperm counts. Hims sometimes bundles enclomiphene with supporting nutrients (such as zinc and B-vitamins) and, for eligible men, tadalafil for erectile function, but enclomiphene is the workhorse of the formula.

TestoFuel doesn't add testosterone; it supplies the raw materials and signals involved in making it. D-aspartic acid is an amino acid linked to luteinizing-hormone release; vitamin D, zinc, and magnesium are cofactors the body needs for normal testosterone synthesis. The logic is repletion — correcting shortfalls so the hormonal machinery runs normally — which is why benefits are most plausible when you're deficient to begin with.

Enclomiphene has a credible clinical track record for secondary hypogonadism. In a 2014 randomized Phase II trial published in Fertility and Sterility (124 men with morning testosterone below 250 ng/dL), enclomiphene at 12.5 mg and 25 mg raised morning testosterone, LH, and FSH to levels comparable with 1% topical testosterone gel, while conserving sperm counts. A 2025 systematic review and meta-analysis of 10 randomized trials (819 men) found SERM therapy increased total testosterone by a mean of about 274 ng/dL versus placebo (95% CI ~192-356 ng/dL), with LH up ~4.7 IU/L and FSH up ~4.6 IU/L, and no significant difference in testosterone versus testosterone gel. Crucially, unlike testosterone gel (which in Phase III data reduced sperm density by roughly 33-57%), enclomiphene caused only minimal change in sperm density (about 12-15%), preserving fertility. Important caveat: despite this data, enclomiphene's new-drug application (Androxal) received an FDA Complete Response Letter in December 2015 requesting additional Phase 3 work, and development was discontinued for all indications in 2021, so it is not an FDA-approved drug.

The strongest evidence behind TestoFuel's formula is for correcting deficiencies: meta-analyses suggest vitamin D supplementation can modestly raise total testosterone, and zinc supplementation raises testosterone in zinc-deficient men. Evidence for D-aspartic acid is mixed — some short studies show a transient rise, others show no effect, especially in trained men. Overall, expect modest, deficiency-dependent support rather than a clinically meaningful T increase.

Commonly reported side effects of enclomiphene include headache, hot flashes, mood changes, nausea, and breast tenderness or sensitivity. Because it works partly by raising estradiol as well as testosterone, some men notice estrogen-related effects. If tadalafil is added, expect possible headache, flushing, indigestion, back or muscle pain, and nasal congestion. Less common but more serious concerns reported with SERMs in this class include visual disturbances (blurring or floaters) and blood-clot risk; vision changes warrant stopping the drug and contacting a clinician. Long-term safety data specific to enclomiphene is limited, and the 2025 meta-analysis explicitly noted its safety endpoints were underpowered, so ongoing monitoring matters. Seek urgent care for chest pain, a sudden vision change, signs of a clot (leg swelling or pain, shortness of breath), or an erection lasting over four hours.

Generally well tolerated. Occasional mild GI upset, a fishy aftertaste from oyster extract, or headache are possible. Shellfish-allergic individuals should avoid it due to oyster-derived ingredients. This is educational information, not medical advice; supplements are not FDA-evaluated to treat any condition.

As of 2026, Hims prices its testosterone program by plan length, paid upfront: roughly $199/month on a 3-month plan, about $139/month on a 5-month plan, and around $99/month on a 10-month plan, which bundles medication, provider check-ins, lab monitoring, and shipping. You typically prepay for the full 3-, 5-, or 10-month term, and these prescription-program charges are generally not refundable. Because enclomiphene is compounded and not FDA-approved, it is essentially never covered by insurance, so expect to pay out of pocket; some men find generic clomiphene or, where appropriate, FDA-approved TRT cheaper through a local prescriber and pharmacy. Lab fees and any office visits outside the bundle can add to the total, and prices change frequently, so confirm current figures directly with Hims.

As of 2026, a single box (120 capsules, about one month at 4 capsules/day) runs roughly $65 from the official site, the only authorized seller. Multi-box bundles such as buy-three-get-two-free cut the effective per-box price and include free shipping but require more upfront. Not insurance-eligible.

This is aimed at adult men with lab-confirmed low testosterone of the secondary (hypogonadotropic) type, meaning the testicles can still work but the brain's hormonal signaling is low or inappropriately normal. It is especially relevant for younger men who want to raise testosterone while preserving fertility, since it does not suppress sperm production the way injected or topical testosterone does. It requires a baseline testosterone test, a licensed provider's review, and a prescription. It is not appropriate for men with primary (testicular failure) hypogonadism, those who only want a "boost" with normal labs, men trying to conceive without medical guidance, or anyone with a hormone-sensitive cancer or significant cardiovascular, liver, or vision conditions. Women, and anyone who is or may become pregnant, must not take it. Always disclose your full history to the prescriber.

Healthy adult men who want OTC support for natural testosterone, particularly those who may be low in vitamin D, zinc, or magnesium. Not a treatment for diagnosed hypogonadism. Men with medical conditions or on medication should check with a clinician, and those with shellfish allergies should note the oyster extract.