New patient panels ship free this month. Rx products require provider consultation and eligibility.
Testosterone

Get your drive back. Keep your body in charge.

Testosterone naturally declines with age, and the symptoms are easy to blame on "just life." Xilo tests your actual levels, puts a licensed provider on your case, and offers oral protocols that support your own production.

Labs firstevery protocol starts with bloodwork
Oral dailyno injections, no clinic visits
From $89/moprovider care and labs included

Rx required. Compounded drug products, where used, are not approved or evaluated for safety, effectiveness, or quality by the FDA. Not available in all 50 states. Important safety information.

Sound familiar?

Low testosterone rarely announces itself.

It shows up as a pattern. If two or three of these have crept in over the last few years, your levels are worth checking.

Flat energy

Dragging by mid-afternoon no matter how much you sleep. Coffee stops working.

Low drive

Less interest in sex, weaker performance, and a libido that feels like someone turned the dial down.

Slower gym returns

Strength plateaus, longer recovery, and muscle that is harder to keep than it used to be.

Fog and mood dips

Trouble focusing, shorter patience, and a baseline mood that sits lower than it should.

Honest note: every symptom above can have other causes, from sleep apnea to thyroid issues to plain overwork. That is exactly why Xilo will not prescribe from a symptom checklist. Your labs and a licensed provider decide, not a quiz score.
Treatment options

Protocols, compared without the sales pitch.

Prescriptions are issued only if a licensed provider determines treatment is clinically appropriate for you after reviewing your labs.

Rx · dual-action protocol

Testosterone RX+

From $119/mo†Billed by plan. Provider care and follow-up labs included.

Everything in Testosterone RX, paired with daily performance support for men whose main goals are drive and bedroom confidence.

Non-Rx · daily foundation

T-Base Daily

$39/moNo prescription required. Available to anyone.

Vitamin D, zinc, magnesium, and ashwagandha: the nutritional foundation testosterone production depends on. A starting point, not a treatment.

ProtocolFormHow it worksFertility impactRequires Rx
Testosterone RXOnce-daily oralStimulates your body's own production pathwaysDesigned to preserve natural production1Yes, labs + provider review
Testosterone RX+Once-daily oral, two-partProduction support plus daily performance supportDesigned to preserve natural production1Yes, labs + provider review
T-Base DailyDaily capsulesCovers nutritional cofactors of hormone productionNone expectedNo
Traditional injectable TRTInjectionsReplaces testosterone from outside the bodyCan suppress natural production and fertilityNot offered by Xilo online

Comparison reflects general mechanism-of-action differences discussed in published literature. Your provider will discuss what applies to your case. Xilo does not currently offer injectable TRT through its platform.

Labs first, always

We will not guess about your hormones.

Symptoms start the conversation. Bloodwork decides it. Every Xilo protocol begins with the baseline hormone panel, and every dose is verified with follow-up testing.

  • Total and free testosterone The headline numbers, measured properly
  • SHBG and estradiol The context that explains how your testosterone actually behaves
  • LH and FSH The upstream signals that show where a problem starts
  • Thyroid and metabolic markers Because "low T symptoms" are sometimes something else
The evidence

What the research shows, stated carefully.

+2xsome studies of oral natural-production therapy report meaningful increases in total testosterone versus baseline in treated men.3
2 to 4 wksthe window in which level changes began appearing in short-term clinical research.3
Preservedsperm parameters in study cohorts on production-stimulating therapy, unlike traditional exogenous TRT.1

Findings summarize published third-party clinical research on oral testosterone-support therapies in study populations. They are not a promise about your results, and your provider may determine treatment is not right for you. Citations on the clinical standards page.

Testosterone FAQ

The questions men actually ask.

What number counts as "low"?

Most labs flag total testosterone below roughly 300 ng/dL, but a single number never tells the whole story. Free testosterone, SHBG, your symptoms, and your age all matter. Your Xilo provider interprets the full panel, not one line of it.

Will Testosterone RX affect my fertility?

Testosterone RX is built around a mechanism that stimulates your body's own production rather than replacing it, an approach studied for preserving sperm production. Traditional injectable TRT, by contrast, can suppress fertility. If having kids is on your roadmap, tell your provider; it directly shapes the recommendation.

How fast will I feel something?

In clinical research, measurable level changes appeared within two to four weeks for some men, and subjective changes like energy and drive typically trail the numbers. Your follow-up panel exists to confirm what is happening rather than leaving you to guess.

What are the side effects?

Commonly reported side effects of production-stimulating oral therapy include headache, nausea, and mood changes. Rare but serious risks include vision changes and blood clots. Review the important safety information and go over your history with your provider before starting.

Can I use insurance, FSA, or HSA?

Xilo does not bill insurance. Plans are priced directly and include provider care, labs, and medication if prescribed. FSA/HSA eligibility varies by administrator; check with yours before purchasing.

Is this available in my state?

Availability varies by state, and some states require a video visit with your provider. The quiz checks your state up front, before you pay anything.

Two minutes, no commitment

Stop wondering what your levels are.

The quiz checks your symptoms, state, and history, then routes you to labs and a licensed provider. You decide from there.