Boron
testosterone
Boron is a trace mineral that influences steroid hormone levels, yet most people get very little of it from food. Early research suggests it may increase free testosterone while reducing estradiol — though the evidence base is still small and more studies are needed to confirm these effects at typical supplement doses.
We include boron as boron citrate, a chelated form designed for absorption. It works through a mechanism distinct from the herbal ingredients in our formula, giving the testosterone-support stack another angle that doesn't overlap with ashwagandha, tongkat ali, or fenugreek.
The statements on this page have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Boron Benefits — What Studies Found
Some nutrients take months to move the needle. Boron may support free testosterone levels faster than you’d expect.
Rapid Free T Increase
Free TestosteroneEstrogen Reduction
EstradiolWhy a 5mg dose of Boron
Typical supplemental doses of boron range from 3-10mg. We chose 5mg as a reasonable dose given the available research.
- Within the Research Range 5mg falls in the 3-10mg range used in clinical studies on steroid hormone metabolism.
- Boron Citrate Form A well-absorbed chelated form that delivers consistent elemental boron per serving.
- Distinct Mechanism May affect free testosterone and estradiol through pathways different from the herbal ingredients in the formula.
- Moderate Given Limited Data The key testosterone study used 10mg/day; we chose 5mg given that long-term data at higher amounts is limited.
The study showing rapid testosterone increase used 10mg/day. We chose a somewhat lower dose given the limited long-term safety data, while still providing a meaningful amount.
Clinical Dose Range
Clinical studies use 3–10mg daily. Our 5mg dose provides meaningful support without approaching the tolerable upper limit.
A trace mineral that may shift the testosterone-to-estrogen ratio faster than you'd expect. Small evidence base, promising mechanism, distinct pathway.
01
Free Testosterone Increase in One Week
Naghii MR, et al. (2011). Journal of Trace Elements in Medicine and Biology.
Source
Free Testosterone Increase in One Week
Naghii MR, et al. (2011). Journal of Trace Elements in Medicine and Biology. Source
In a small uncontrolled study (n=8, no placebo) of healthy men, one week of boron supplementation (10mg/day) significantly increased free testosterone while decreasing estradiol. The same study found significant reductions in inflammatory markers (hsCRP, TNF-alpha).
02
Steroid Hormone Effects in Women
Nielsen FH, et al. (1987). FASEB Journal.
Source
Steroid Hormone Effects in Women
Nielsen FH, et al. (1987). FASEB Journal. Source
An early study found that boron supplementation in postmenopausal women on low-boron diets markedly elevated serum concentrations of both 17-beta-estradiol and testosterone. While this was in women, it demonstrates boron’s influence on steroid hormone metabolism.
03
Anti-Inflammatory Effects
Scorei R, et al. (2011). Biological Trace Element Research.
Source
Anti-Inflammatory Effects
Scorei R, et al. (2011). Biological Trace Element Research. Source
A double-blind, placebo-controlled study in osteoarthritis patients found that calcium fructoborate (a form of boron, different from the boron citrate in our formula) reduced CRP by ~60% and fibrinogen by ~14% over 15 days. Inflammation interferes with testosterone production, so anti-inflammatory effects may contribute to hormone benefits. Note: this study used a different boron form at a different dose than our formula.
04
Mineral Metabolism
Nielsen FH, et al. (1987). FASEB Journal.
Source
Mineral Metabolism
Nielsen FH, et al. (1987). FASEB Journal. Source
Research shows boron reduces urinary excretion of calcium and magnesium, potentially supporting bone health and mineral status.
05
Honest Caveat
Green NR, Ferrando AA. (1994). Environmental Health Perspectives.
Source
Honest Caveat
Green NR, Ferrando AA. (1994). Environmental Health Perspectives. Source
A study in male bodybuilders found that 7 weeks of boron supplementation (2.5mg/day) did not affect testosterone or lean body mass beyond what occurred from training alone. This suggests effects may be more pronounced in non-athletes or at higher doses.
Published Research
13 studiesEvery claim we make is grounded in peer-reviewed research. Tap any study to read the abstract.
Our Assessment: Boron
A small but notable study shows free testosterone increase within a week, and anti-inflammatory effects are consistent across research. But results in trained athletes are less clear, and the research base is still small.
- One study shows rapid free testosterone increase (within one week)
- Anti-inflammatory effects are consistently demonstrated
- Effects on estrogen metabolism are documented
- Mineral metabolism benefits (calcium, magnesium) are observed
- Effects in trained athletes may be less pronounced
- Optimal dosing isn’t established
- Mechanism of action isn’t fully understood
- Long-term effects need more research
How Boron Fits the Formula
No ingredient works alone. Boron was chosen because it amplifies — and is amplified by — specific formula partners.
Fenugreek and Tongkat Ali
All three ingredients have effects on testosterone-to-estrogen balance, but through different mechanisms. Fenugreek and tongkat ali inhibit aromatase. Boron may directly affect estradiol levels and free testosterone through a different pathway. Multiple angles of support.
Zinc
Zinc is essential for testosterone synthesis. Boron may help optimize free testosterone levels and reduce inflammation that interferes with hormone production. Complementary mechanisms.
Ashwagandha
Boron’s anti-inflammatory effects complement ashwagandha’s stress-reducing effects. Both chronic inflammation and chronic stress suppress testosterone production.
Safety and Precautions
Always consult with a healthcare professional before starting any new dietary supplement, especially if you have an existing medical condition or take prescription medications.
