Ingredient research
Boron and Testosterone: What One Small Study Can and Cannot Tell You
The boron and testosterone link comes mainly from one small study: 8 men took 10 mg of boron a day for a week, and their free testosterone rose. That is too few men and too short a time to draw firm conclusions. Vapofil's 20 mg of boron chelate holds about 1 mg of boron, close to what food already supplies.
Written by the Vapofil editorial teamUpdated · 8 min read
Background
What is boron, and why is it linked to testosterone?
Boron is a trace mineral found in everyday foods. Most American adults already get about 0.87 to 1.35 mg a day from diet alone (NIH ODS, Boron).
Supplements commonly add 0.15 to 6 mg of boron (NIH ODS, Boron). In men's products, boron is often marketed with hormone language. Most of that traces back to a single small study, covered below.
Vapofil lists Boron Amino Acid Chelate 5%, 20 mg per serving. The sales page makes hormone claims for it that we do not repeat; they are checked on the sales claims page.
The study
What did the boron and testosterone study actually test?
The study most often quoted, read line by line from its abstract.
| Who took part | 8 male volunteers |
|---|---|
| Dose | One 10 mg boron capsule a day |
| How long | 7 days, with blood tests on day 0, day 1 and day 7 |
| Reported results | Free testosterone rose significantly; estradiol fell; three inflammation markers fell |
| What it cannot show | Whether the change lasts, whether men felt any different, or what happens at 1 mg |
A result in 8 men over one week is a starting point for research, not proof. Hormone levels shift from day to day for many reasons. Larger and longer trials would be needed before anyone could say boron changes testosterone in a way that matters.
The label
How much boron is in a Vapofil serving?
About 1 mg. Tap number 6 on the panel to see why.
- Serving size
2 capsules per serving, 30 servings per bottle. At the labeled 2 a day, one bottle of 60 lasts 30 days.
- Saw palmetto, 20 mg
Prostate trials used 320 mg a day, 16 times more, and still found little to no benefit.
- Wild yam, 20 mg
Its diosgenin is a lab raw material for hormones. The body cannot turn it into hormones.
- Sarsaparilla, 20 mg
Traditional use is grams a day. No controlled human trials support its proposed uses.
- Nettle leaf, 20 mg
Prostate research used nettle root, not leaf, at 300 to 600 mg a day.
- Boron chelate 5%, 20 mg
5% of 20 mg is about 1 mg of boron, near what food gives you. The adult upper limit is 20 mg.
- Tongkat ali, 10 mg (100:1)
"Equivalent to 1000mg" describes the raw root used to make it. Trials gave 100 to 600 mg of extract.
- Horny goat weed, 8 mg (10:1)
Made from about 80 mg of herb. The evidence is mostly from lab and animal studies.
- Other ingredients
Microcrystalline cellulose, gelatin and magnesium stearate. Gelatin comes from animals: not vegetarian.
- FDA statement
Not evaluated by the FDA. Not intended to diagnose, treat, cure or prevent any disease.
- FDA registered facility
Registration lists a facility with the FDA. It is not an approval of the product.
The label lists 20 mg of boron amino acid chelate 5%. A chelate is boron bound to an amino acid, and only 5% of its weight is boron. So 20 mg holds about 1 mg of elemental boron (our math from the label). That is roughly one extra day's worth of food boron, and one tenth of the dose in the study.
Side by side
How does 1 mg compare with the study and the safe limit?
Study figures (Boron study, 8 men); upper limit from the NIH Office of Dietary Supplements (NIH ODS, Boron).
Testosterone basics
What does low testosterone actually mean?
A low-testosterone diagnosis comes from blood tests, not from how you feel. The American Urological Association uses a total level below 300 ng/dL as a reasonable cut-off, measured twice on separate early mornings (AUA, Testosterone deficiency guideline). Diagnosis also needs symptoms or signs, not a number alone.
Levels drop slowly with age, typically about 1% a year after 30 or 40, Mayo Clinic says (Mayo Clinic, Testosterone and aging). Sleep apnea, thyroid problems, diabetes, depression and medicine side effects can cause similar symptoms. Mayo adds that "treating normal aging with testosterone therapy is not advisable" (Mayo Clinic, Testosterone and aging).
ED can be an early sign of heart disease or diabetes, even when hormone levels are normal (AUA, ED guideline). If erections are the concern, start with a checkup, as our ED guide explains.
What matters more
Which daily habits affect testosterone more than a mineral?
Sleep, movement and weight have better evidence than any trace mineral.
- Morning, 2 capsules
With an 8 oz glass of water. Morning comes from the sales page; the label sets no time.
- Move most days
CDC advises 150 minutes of moderate activity a week plus 2 days of strength work.
- Sleep 7 hours or more
In a small lab study, a week of 5-hour nights lowered young men's testosterone by 10-15%.
Activity advice (CDC, Physical activity for adults); sleep (CDC, Sleep) (UChicago Medicine, Sleep and testosterone); directions (Vapofil sales page, Prices and guarantee).
In a small lab study, healthy young men who slept under five hours a night for eight nights saw testosterone fall by 10 to 15% (UChicago Medicine, Sleep and testosterone). For men without a medical cause of low testosterone, Mayo Clinic suggests weight loss and resistance exercise (Mayo Clinic, Testosterone and aging). The AUA says every man with testosterone deficiency should be counseled on lifestyle changes (AUA, Testosterone deficiency guideline).
Safety
Is the boron in Vapofil safe?
At about 1 mg a day, boron sits far below the adult upper limit of 20 mg a day (NIH ODS, Boron). Extremely high doses, 15,000 mg or more, can be fatal. The NIH also says boron is not known to have any clinically relevant interactions with medications (NIH ODS, Boron).
That low amount cuts both ways. It is unlikely to cause harm, and it is also unlikely to do much beyond what your diet already gives you. The full profile is on the boron page.
Bottom line
Should you take boron for testosterone?
- The best-known study is tiny: 8 men, one week, 10 mg a day.
- Vapofil supplies about 1 mg, a tenth of that dose and close to normal food intake.
- If you think your testosterone is low, ask for two morning blood tests.
- Sleep, activity and a healthy weight have stronger support.
FAQ
Boron and testosterone FAQ
Does boron really raise testosterone levels?
The evidence is thin. In the study most often cited, 8 men took 10 mg of boron a day for one week and their free testosterone rose. That is too small and too short to show a lasting or meaningful effect. Larger, longer trials would be needed before anyone could say boron works.
What does a daily Vapofil serving add up to in pure boron?
About 1 mg a day. The label lists 20 mg of boron amino acid chelate 5% per 2-capsule serving, and 5% of 20 mg is about 1 mg of elemental boron. That is close to the 0.87 to 1.35 mg most adults already get from food, and a tenth of the study dose.
What is boron amino acid chelate?
It is boron bound to an amino acid, a form used in supplements. The 5% on the Vapofil label means only 5% of the chelate's weight is boron itself. So when you read 20 mg of chelate, the boron inside is about 1 mg. Always look for the elemental amount when comparing products.
How much boron is safe per day?
The NIH sets the adult upper limit at 20 mg of boron a day for people 19 and older. Typical supplements provide 0.15 to 6 mg. Extremely high doses, 15,000 mg or more, can be fatal. Vapofil's roughly 1 mg a day is well within the safe range.
How do I know if my testosterone is low?
Only a blood test can tell. The American Urological Association recommends two early-morning total testosterone tests on separate days and uses 300 ng/dL as a reasonable cut-off. Diagnosis also needs symptoms or signs. Tiredness and low drive have many other causes, so see a doctor rather than guessing.
Does boron interact with medications?
The NIH Office of Dietary Supplements says boron is not known to have any clinically relevant interactions with medications. Other ingredients in a combination product may interact, though, so show your doctor or pharmacist the whole label before adding any men's supplement to your routine.
Who wrote this
Written and reviewed by
Plain-language pages built from the label, the sales page and linked public health sources.
Last updated . Our editorial standards explain how we check reviews. This website is run by Vapofildaily, a U.S. stocking partner for Vapofil, not by the manufacturer or the distributor named on the label. Purchases through our order links earn us a commission.
Keep reading
More about Vapofil
Boron
20 mg of a 5% chelate works out to about 1 mg of boron, roughly what a day of food supplies.
Read more
Dose guide
Each Vapofil amount next to the dose used in research, plus what the label's extract ratios do and do not tell you.
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Who it's for
Who Vapofil may suit, who should ask a doctor first, and the six questions to answer before you order.
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