Fadogia Agrestis: The Viral Testosterone Herb: Animal Data, Toxicity Concerns and What Is Missing

Late on a weeknight, a 38-year-old father of two is standing in his kitchen reading the back of a bottle he ordered after a podcast clip. The label promises testosterone support. The clip promised more: energy, drive, the version of himself he remembers from his twenties. What the label does not say is that every number behind the claim was measured in a rat.

Fadogia agrestis is trending, as of September 2026, for the same reason it trended last year: a wave of fitness podcasts and short-form videos have folded it into a so-called natural testosterone protocol, usually alongside tongkat ali. Search interest keeps climbing. Published human research has not moved at all.

That mismatch is the whole story. This piece walks through what the animal data actually showed, where the toxicity signal came from, what a responsible research program would need to look like, and the one question that matters more than any supplement: whether your testosterone is actually low.

What changed recently with fadogia agrestis

Nothing new happened in a laboratory. That is the first thing to understand about why fadogia agrestis is everywhere. The research base has barely moved in almost two decades; what moved is the audience.

The timeline is short. In 2005, a research group at a Nigerian university published a study in the Asian Journal of Andrology showing that an aqueous extract (a water-based extract) of the plant’s stem increased sexual behavior and serum testosterone in male albino rats over five days. In 2008, the same group published a follow-up in the Journal of Ethnopharmacology that ran for 28 days and reported changes in testicular function markers, which the authors flagged as a possible sign of toxicity. Those two papers, plus a handful of related rodent reports on liver, kidney and blood-fat markers, remain essentially the entire scientific record.

From roughly 2022 onward, the herb was picked up by fitness podcasts and video creators, usually paired with tongkat ali (Eurycoma longifolia, a Southeast Asian root with a few small human trials). Search volume climbed, product listings multiplied, and extract-strength labels such as 10:1 and 20:1 became selling points even though no human study has compared one with another.

As of September 2026, a PubMed search still returns no randomized controlled trial of fadogia agrestis in people. A randomized controlled trial, or RCT, assigns participants by chance to a treatment or a placebo; medicine treats it as the strongest test of whether something works. Over the same period, the evidence for prescription testosterone therapy has grown, including large safety trials summarized by Mayo Clinic and Harvard Health. The gap between what is known about the herb and what is known about the medicine it is compared with has widened, not narrowed.

What is fadogia agrestis, and where does the tradition come from?

Fadogia agrestis is a flowering shrub in the Rubiaceae family, the same botanical family as coffee. It grows in Nigeria and across parts of West and Central Africa, often on open savanna. The part used is the stem, which is dried and either powdered or boiled into a decoction, a concentrated tea.

Traditional use in Nigerian herbal medicine is reasonably well documented in the ethnobotanical literature. Healers have used it as an aphrodisiac, for erectile difficulties, and for fevers and general weakness. That history is why the 2005 researchers chose to test it in the first place; they were asking whether a folk claim held up under laboratory conditions.

Chemical screening in the same paper found the stem extract contains alkaloids (nitrogen-containing plant compounds that often have biological activity), saponins (soap-like compounds that can irritate tissue and affect hormone pathways), anthraquinones and flavonoids. Which of these, if any, accounts for the hormonal effect in rats has never been established. No single active compound has been isolated, which means there is nothing to standardize a supplement against.

That last point deserves a plain statement. When a product says 10:1 extract, it means roughly ten parts of raw plant went into one part of finished powder. It does not tell you how much of any active molecule is present, because no one has agreed what the active molecule is. Two bottles with the same ratio can contain very different chemistry depending on harvest season, soil, which plant part was used and how the extract was dried.

Species identity is a related gap. Several Fadogia species grow in the same regions, and raw-material testing that confirms a product is actually Fadogia agrestis is not required of supplement makers in the United States.

What does fadogia agrestis do for you? The claim and the biology behind it

The marketing story is tidy. Fadogia agrestis, it says, acts like luteinizing hormone and tells the testes to make more testosterone. To judge that claim, it helps to see how the system normally runs.

Testosterone production starts in the brain. The hypothalamus releases a signal that prompts the pituitary gland to release luteinizing hormone, usually shortened to LH. LH travels through the bloodstream to Leydig cells, specialized cells sitting between the sperm-producing tubules of the testes, and those cells respond by synthesizing testosterone. When testosterone rises, the brain senses it and dials LH back down. It is a thermostat, not a tap.

Where does the LH-mimic idea come from? Not from a measurement. The 2005 rat study recorded higher serum testosterone after five days of extract and more sexual behavior, then proposed that the plant might work through an androgenic mechanism. It did not measure LH, did not test the extract on isolated Leydig cells, and did not identify a compound that binds the LH receptor. The mimic story is a hypothesis layered on top of a rodent result, repeated until it sounded like a finding.

Even if the hypothesis were correct in rats, three translation problems remain. Rats were dosed by body weight at levels that have no established human equivalent. The study lasted five days, which tells you nothing about the brain’s thermostat response over months. And a rise in a hormone number is not the same as a change in how a person feels or functions; plenty of substances nudge a lab value without delivering a benefit.

So what does fadogia agrestis do for you? Honestly answered: in people, no one knows.

What the evidence actually says, graded by strength

Medicine ranks evidence on a ladder. At the top sit systematic reviews of randomized controlled trials; below them, individual RCTs; then observational studies that follow people without assigning treatment; then animal and laboratory work; and at the bottom, expert opinion and anecdote. Here is where fadogia agrestis stands on each rung.

Human randomized trials: none published. Human observational studies: none. There is no cohort of users whose testosterone, sperm counts or liver enzymes have been tracked over time in a peer-reviewed setting.

Animal studies: two controlled rodent experiments from one laboratory, published in 2005 and 2008, plus related rodent reports from the same group on blood lipids, liver and kidney markers. All were short, used small groups, and have not been independently replicated. In pharmacology, a result that comes from a single lab is treated as preliminary until another team reproduces it.

Laboratory (in vitro) work: minimal. In vitro means in a dish rather than in a living body. There is no published work showing which compound in the plant binds which receptor.

Expert opinion: consumer health references that cover herbal supplements generally classify the evidence for fadogia agrestis as insufficient to judge either effectiveness or safety. NIH’s Office of Dietary Supplements reminds consumers that dietary supplements are not reviewed for effectiveness before sale.

The comparison that matters is with the alternatives people weigh it against. Ashwagandha and tongkat ali each have a few small, short human RCTs reporting modest testosterone changes in men, with mixed results. Prescription testosterone therapy has decades of trials, including large cardiovascular safety studies. Harvard Health’s overview of what testosterone does and does not do is a useful anchor for realistic expectations.

Graded plainly: the evidence that fadogia agrestis raises testosterone in humans is preclinical and weak. The evidence that it is safe in humans does not exist.

The 2005 rat study, explained without the hype

Read the actual paper and it is a modest piece of work, carefully described by its authors and wildly overextended by everyone since.

Male albino rats received a water extract of Fadogia agrestis stem by mouth once daily for five days, at several dose levels, while a control group received water alone. The researchers then placed each male with a receptive female and counted standard measures of rodent sexual behavior: how often the male mounted, how often intromission occurred, and how long it took to ejaculate. They also drew blood and measured serum testosterone.

The results were consistent in direction. Treated rats mounted more often, achieved intromission more often and took longer to ejaculate, a pattern the authors interpreted as increased arousal and prolonged activity. Serum testosterone rose, and the rise grew with the dose. The authors concluded the extract showed aphrodisiac potential and might support traditional use.

Now the limits, which the authors themselves acknowledged. Five days is a snapshot. Rodent mating behavior is a proxy, not a measure of human desire or erectile function. Group sizes were small. Hormones were measured once, without tracking LH or the brain’s feedback response. There was no toxicology arm, no histology of the testes, no liver or kidney panel. And the extract was a crude water decoction, not the concentrated powders now sold in capsules, so the dose relationship cannot be mapped onto any product.

None of that makes it a bad study. It is a reasonable first experiment, the kind that in a well-funded field would prompt a replication, then a toxicology program, then a pilot in humans. For fadogia agrestis, the sequence stopped after step two, and step two is where the warning appeared.

The 2008 toxicity study and the testicular concern

Three years after the behavior study, the same group published a longer experiment that asked a more uncomfortable question: what happens to the testes themselves after repeated dosing?

Rats again received the aqueous stem extract daily, this time for 28 days, across several dose levels. The researchers then weighed the testes and measured a panel of biochemical markers inside testicular tissue: enzymes such as alkaline phosphatase, acid phosphatase and gamma-glutamyl transferase, along with protein, cholesterol, glycogen and sialic acid. These are standard laboratory indicators of how testicular cells are functioning and whether their membranes are intact.

Several markers shifted away from normal in ways that pointed to disturbed cell function rather than healthy stimulation. The authors wrote that the extract appeared to adversely affect testicular function at the doses studied and that caution was warranted, particularly with prolonged use. Related rodent work from the group also reported changes in liver enzymes, kidney markers and blood lipid profiles after extract administration.

Two things can be true at once. These findings do not prove the plant harms human testes; rat dosing, extract preparation and species differences all stand between the data and a person. At the same time, a dose-dependent toxicity signal in a target organ is exactly the kind of result that, in drug development, triggers formal toxicology before anyone takes a first human dose. For fadogia agrestis that step never happened. The product went from rodent warning to retail shelf without the safety work in between.

That is why toxicity concerns dominate honest discussions of the herb. The same laboratory that produced the only positive data also produced the only safety data, and the safety data were not reassuring.

Is fadogia agrestis safe? What is known about side effects

The direct answer is that no one has studied fadogia agrestis side effects in people. Every list of symptoms you find online is assembled from user forums, not from monitored trials. That absence is itself the most important safety fact.

Anecdotal reports from users most often mention nausea, headache, disturbed sleep, irritability and, in a smaller number of accounts, abnormal liver enzyme results on routine blood work. None of these can be attributed to the herb with any confidence, because the people reporting them were usually taking several supplements, exercising intensively and not under medical observation. The rodent findings on testicular and liver markers give these anecdotes a plausible biological context, but context is not confirmation.

Product quality adds a separate layer of risk. Under United States law, dietary supplements do not require premarket approval for safety or effectiveness; NIH’s Office of Dietary Supplements explains that manufacturers are responsible for their own claims and that regulators act mainly after problems surface. Sexual-performance supplements as a category have a documented history of adulteration with undeclared prescription drugs, which is a hazard independent of the plant itself.

Drug interactions are entirely uncharted. A person taking blood thinners, diabetes medicines, finasteride, antidepressants or any hormone therapy has no data to tell them whether the extract alters those drugs’ effects. Anyone trying to conceive should know that the testicular markers in the 2008 study are the same systems that support sperm production.

Groups for whom the uncertainty is greatest include adolescents, people with liver or kidney disease, anyone with a hormone-sensitive condition such as prostate disease, and anyone already prescribed testosterone or related medicines. Nobody should stop or adjust a prescribed medicine in favor of the herb; that decision always belongs to the prescribing clinician.

Fadogia agrestis benefits in context: how the options compare

People rarely consider fadogia agrestis in isolation. They are choosing among herbs, lifestyle changes and, sometimes, a prescription. Lining up the evidence side by side makes the choice clearer.

Approach	Best available human evidence	What it has shown	Human safety data
Fadogia agrestis	None; two rodent studies from one laboratory	Higher testosterone and sexual behavior in rats over 5 days; testicular marker changes over 28 days	None
Tongkat ali	A few small, short RCTs	Modest, inconsistent testosterone changes, mainly in older men with low baseline levels	Limited; short-term trials only
Ashwagandha	A few small, short RCTs	Modest testosterone increases in some trials of men; results vary	Limited; rare liver injury reports
Weight loss in men with obesity	RCTs and large observational studies	Meaningful testosterone rise proportional to weight lost	Well characterized
Prescription testosterone therapy	Many RCTs including large cardiovascular safety trials	Improved sexual function and some symptoms in men with confirmed hypogonadism	Extensive; requires monitoring

The table carries an uncomfortable message for anyone hoping the herb is a gentle middle path. On evidence quality, fadogia agrestis sits below the two herbs it is usually bundled with, and far below both weight management and medical therapy. On safety knowledge, it sits at zero.

That does not make prescription testosterone the automatic answer. Mayo Clinic’s overview of testosterone therapy lists real trade-offs, including worsened sleep apnea, acne, enlarged male breast tissue (gynecomastia), reduced sperm production and the need for ongoing blood monitoring. It is a treatment for a diagnosed condition, prescribed and supervised by a clinician, not a lifestyle upgrade. The honest comparison is between a well-studied medicine with known risks and an unstudied herb with unknown ones.

How much fadogia agrestis per day, how long until it works, and which product is best?

These are the three most searched questions about the herb, and they share one honest answer: there is no human data to answer any of them.

How much per day. No dose has ever been established for people. Amounts printed on labels are not derived from human studies; they are extrapolated loosely from rat experiments, or simply chosen by the manufacturer. Rodent doses do not convert to human doses by multiplying body weight, and a crude water decoction given to rats cannot be mapped onto a concentrated extract powder. This article does not give a dose because there is no evidence from which to derive one.

How long until it works. The only time points in the literature are five days (the behavior study) and 28 days (the toxicity study), both in rats. Claims of noticing a difference within two weeks come from user anecdotes, and the placebo response for energy, libido and mood is large and well documented. Without a blinded trial, there is no way to separate the herb’s effect from expectation.

Which supplement is best. No product has been tested in humans, so none can be called effective or safe. If someone chooses to use one despite that, the only quality markers with any meaning are independent third-party testing seals that verify identity, purity and absence of contaminants. A seal confirms what is in the bottle. It says nothing about whether the contents do anything or are safe over time.

The more useful question hides behind all three. Someone asking how much to take is usually asking how to feel better. That conversation belongs with a clinician who can measure testosterone properly, rule out other causes and discuss options whose doses and timelines actually are known.

Common myths about fadogia agrestis, corrected

Viral claims about this herb follow a predictable pattern: a rodent finding is stated as a human fact, then a safety gap is reframed as a feature. Here are the ones that circulate most.

Myth: it is natural, so it is safe. Natural describes origin, not risk. The only safety study ever done on fadogia agrestis found testicular marker disturbances in rats after 28 days. Many of the most toxic substances known are plant-derived.

Myth: it raises testosterone several-fold. The multiplied figures quoted online describe serum testosterone in rats after five days of a water extract. No human has had their testosterone measured before and after fadogia agrestis in a published study.

Myth: it works like luteinizing hormone. This is a hypothesis proposed to explain a rodent result. LH was never measured, no receptor binding has been shown, and no active compound has been identified.

Myth: cycling on and off prevents toxicity. There is no study of any cycling pattern. The idea borrows language from anabolic steroid culture and applies it to a plant whose kinetics in the human body are unknown.

Myth: combining it with tongkat ali is a proven protocol. No trial has tested the combination in people or animals. Tongkat ali’s own human evidence is small and mixed; adding an unstudied partner does not strengthen it.

Myth: if it were dangerous it would already be banned. Dietary supplements in the United States reach the market without premarket safety review. Regulators typically act after harm reports accumulate, as NIH’s Office of Dietary Supplements explains.

Correcting myths is not the same as declaring the herb useless. It may turn out to do something. The point is that no one has done the work to find out, and selling certainty in the meantime is the real problem.

What is missing: the research that would settle the question

Scientists know exactly what would be needed to move fadogia agrestis from folklore to evidence. The steps are routine; what is unusual is that none of them has been taken while sales have grown.

The first step is botanical and chemical identity: confirming which species and plant part are in use, and isolating the compound or compounds responsible for the hormonal effect in rats. Without that, every study tests a different material.

Next comes formal toxicology. Repeat-dose studies in two animal species, histological examination of testes, liver and kidney, and dedicated reproductive toxicity work would either confirm or dismiss the 2008 signal. Independent replication by a second laboratory would be essential, because the entire record currently rests on one research group.

Pharmacokinetics would follow: how the compounds are absorbed, how long they stay in the body, and whether they interact with liver enzymes that process common medicines. Then a small phase 1 safety study in healthy volunteers, with regular blood work.

Only after those steps would a proper trial make sense. A pre-registered, placebo-controlled RCT lasting at least 12 weeks would measure morning total and free testosterone, LH, sperm parameters, liver enzymes and validated symptom scores in men with and without low baseline testosterone. The design would be unremarkable; trials of this shape have been run for ashwagandha and tongkat ali, which is why those herbs at least have something to debate.

Until that program exists, the correct evidence grade for fadogia agrestis is insufficient, not promising. Promising implies early human signals. There are none. What exists is a traditional use, a rodent behavior result, a rodent warning and a very large audience.

How doctors actually diagnose low testosterone

Most men buying testosterone boosters have never had their testosterone measured. That is worth sitting with, because the symptoms that drive the purchase overlap heavily with conditions a supplement will not touch.

Clinically low testosterone, called hypogonadism, means the testes produce too little hormone, either because of a problem in the testes themselves or because of reduced signaling from the pituitary and hypothalamus. Cleveland Clinic’s overview of male hypogonadism describes the typical picture: reduced libido, erectile difficulties, fatigue, low mood, loss of muscle, and sometimes enlarged male breast tissue (gynecomastia) or reduced body hair.

Every one of those symptoms also occurs with sleep deprivation, depression, obstructive sleep apnea, thyroid disease, alcohol excess, poorly controlled diabetes and several common medicines. Fatigue and low drive are among the least specific complaints in medicine.

Diagnosis therefore depends on a blood test, done properly. Testosterone peaks in the morning and falls through the day, dips during acute illness and varies from day to day, so guidelines call for a morning sample, ideally fasting, repeated on a separate day before any diagnosis is made. MedlinePlus explains what the testosterone test measures and why timing matters. If levels are low, clinicians usually add LH and follicle-stimulating hormone (FSH, the pituitary hormone that supports sperm production) to work out whether the issue sits in the testes or higher up, and often prolactin, iron studies and a sleep assessment.

The practical point: a man with normal morning testosterone will not benefit from pushing it higher, and a man with truly low testosterone deserves to know why before treating the number. Either way, the first step is a measurement, not a capsule.

What the evidence supports for protecting testosterone

If the goal is to feel and function better, the interventions with real human evidence are unglamorous, and that is partly why herbs win the attention contest. Here is what the research supports, with an honest sense of effect size.

Sleep. Small experimental studies in healthy young men have shown that restricting sleep to around five hours a night for a week lowers daytime testosterone measurably. Untreated obstructive sleep apnea is strongly associated with low testosterone. Fixing sleep is the cheapest hormonal intervention available.

Weight. In men with obesity, fat tissue converts testosterone to estrogen and suppresses the brain’s signaling. Both observational studies and trials show testosterone rising as weight falls, with larger losses producing larger changes. This is the single most robust lifestyle finding in the field.

Resistance training. Strength training produces short-lived testosterone rises after sessions and improves body composition, which helps indirectly. The effect on resting levels is modest; the effect on strength, mood and metabolic health is not.

Alcohol and medicines. Heavy drinking suppresses testosterone. Long-term opioids and corticosteroids can do the same. A medicine review with a clinician is worthwhile; stopping a prescribed medicine on your own is not.

Medical therapy. For men with confirmed hypogonadism and symptoms, prescription testosterone therapy has randomized trial evidence for improving sexual function and some measures of mood and bone density, as Mayo Clinic and Harvard Health summarize. It carries real trade-offs, requires monitoring, and is prescribed only after proper testing. Whether it is appropriate is a decision for the treating clinician.

None of these promise a particular result. They are simply the options where the evidence is strong enough to have an informed conversation, which is more than can be said for the herb in the bottle.

When to see a doctor

Two groups should book an appointment: anyone with symptoms that make them want to try fadogia agrestis, and anyone already taking it. The first group needs a diagnosis before a treatment. The second has no safety data behind them and should not be navigating alone.

Seek prompt medical attention if any of the following appear while using the herb or any testosterone-related supplement:

• Yellowing of the skin or eyes, dark urine, pale stools or persistent nausea, which can signal liver injury
• Testicular pain, swelling or noticeable shrinkage
• New breast tenderness or enlarged male breast tissue (gynecomastia)
• Chest pain, shortness of breath, or a swollen, painful calf, which can indicate a blood clot
• Severe or sudden headache, visual changes, or new confusion
• Marked mood change, agitation, aggression or persistent low mood
• Blood in the urine, difficulty passing urine, or a change in urinary stream
• Any allergic reaction such as rash, facial swelling or difficulty breathing

Call emergency services for chest pain, breathing difficulty, facial swelling or sudden neurological symptoms rather than waiting for an appointment.

Bring the actual product to the visit so the clinician can see the label, and list every other supplement and medicine you take. Ask for a morning testosterone test on two separate days if symptoms suggest low levels, and ask what else could explain how you feel.

Some people should not use the herb at all without explicit medical advice: adolescents, anyone with liver, kidney or prostate disease, anyone trying to conceive, and anyone already prescribed testosterone, fertility medicines or hormone-related treatment. Never stop or change a prescribed medicine to make room for a supplement. Every decision about starting, continuing or stopping belongs with the prescribing clinician, who can weigh your history against evidence that, for this herb, remains almost entirely missing.

Frequently asked questions

What does fadogia agrestis do for you?

In humans, no one knows, because no human study has been published. In male rats given a water extract of the stem for five days, researchers recorded higher serum testosterone and more mating behavior. Whether any of that applies to people, at what amount, or for how long, has never been tested. Claims about energy, muscle or libido in men are extrapolations from rodents and user anecdotes rather than measured effects.

Is fadogia agrestis safe?

There is no human safety data at all. The only toxicity study, in rats dosed for 28 days, reported changes in testicular function markers that the authors described as a potential adverse effect, and related rodent work noted shifts in liver and kidney markers. Supplements also carry quality and adulteration risks because they are not reviewed before sale. Anyone considering it should discuss their full medical and medicine history with a clinician first.

What are the fadogia agrestis side effects people report?

User reports most often mention nausea, headache, poor sleep, irritability and occasionally abnormal liver enzymes on blood tests. None of these have been confirmed in a monitored study, and most people reporting them were taking several products at once. The rodent toxicity findings give the reports biological plausibility without proving them. Yellowing skin, testicular pain, breast changes or chest pain while using it warrant prompt medical attention.

How long until fadogia agrestis works?

No human timeline exists. The only time points in the research are five days and 28 days, both in rats, and the 28-day study raised toxicity concerns rather than confirming benefit. Online claims of results within two weeks come from anecdotes, where placebo effects on energy and libido are large. Without a blinded trial, there is no way to say whether the herb does anything in people over any period.

How much fadogia agrestis per day is recommended?

There is no recommended amount, because no dose has ever been established in humans. Figures printed on labels are not derived from clinical studies; they are loose extrapolations from rat experiments or manufacturer choices, and rodent doses do not convert to people by body weight. Responsible health sources do not publish a dose for this reason. Questions about amount are best redirected to a clinician who can measure testosterone and discuss evidence-based options.

Which fadogia agrestis supplement is considered the best?

None can be called best, because no product has been tested in people for effectiveness or safety. If someone chooses to use one anyway, the only meaningful quality markers are independent third-party testing seals that verify botanical identity and screen for contaminants, along with single-ingredient formulas rather than proprietary blends. A seal confirms contents, not benefit. Brand comparisons online are marketing, since no head-to-head or placebo-controlled data exist.

Does fadogia agrestis raise testosterone in humans?

It has never been shown to. The testosterone increase that circulates online was measured in rats after five days of a water extract, and no human has had testosterone measured before and after the herb in a published study. The proposed mechanism, mimicking luteinizing hormone, is a hypothesis that was never tested directly. For men who suspect low testosterone, a morning blood test repeated on two days is the evidence-based first step.

What are the claimed fadogia agrestis benefits, and are any proven?

Marketing lists higher testosterone, stronger libido, better erections, more muscle and more energy. None of these has been demonstrated in people. The rodent behavior study supports only the first two in rats over five days. Compared with ashwagandha and tongkat ali, which have small human trials with mixed results, fadogia agrestis has less evidence, and compared with weight management or medical therapy for confirmed hypogonadism, far less.

Can fadogia agrestis be taken with tongkat ali?

No study has tested the combination in humans or animals, so nothing is known about added benefit or added risk. Tongkat ali has a few small, short human trials showing modest and inconsistent testosterone changes; pairing it with an unstudied herb does not strengthen that evidence. People taking any prescription medicine should raise both supplements with their clinician, since interactions with blood thinners, diabetes medicines and hormone therapies are entirely uncharted.

Should I replace prescribed testosterone therapy with fadogia agrestis?

No. Stopping or changing a prescribed medicine is a decision for the prescribing clinician, never something to do on your own. Prescription testosterone therapy has randomized trial evidence and a monitoring plan behind it; the herb has neither. Abruptly stopping treatment for confirmed hypogonadism can bring symptoms back and disrupt hormone balance. If you have concerns about your prescription, including side effects or cost, discuss them with the clinician managing your care.

References

• Low Testosterone (Male Hypogonadism) (Cleveland Clinic)
• Testosterone Levels Test (MedlinePlus)

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.