Jocko Fuel Combat Tested 3.0: Natural Testosterone Upgrades with TESTFACTOR®

Published on May 21, 2026 by PricePlow Staff | No Comments
Jocko Fuel Combat Tested 3.0: Natural Testosterone Upgrades with TESTFACTOR®

A real formula update, not a flavor change. Jocko Fuel Combat Tested 3.0 retires Fadogia and brings in TestFACTOR®, with 4 randomized human trials showing testosterone gains, lower cortisol, and improved sexual function in men 40 to 65.

Jocko Willink needs little introduction. The retired U.S. Navy SEAL commander, Jocko Podcast host, and bestselling author built Jocko Fuel on a foundation of discipline, natural ingredients, and uncompromising product standards. Combat Tested has been the brand's testosterone optimizer from the start, and version 3.0 is its most clinically grounded iteration yet.

The headline upgrade is TestFACTOR®, PLT Health Solutions' patented botanical blend of Mangifera indica bark and Sphaeranthus indicus flower heads, backed by multiple randomized, double-blind, placebo-controlled clinical trials spanning testosterone, strength, sexual health, and vitality.

Combat Tested 3.0: TestFACTOR Replaces Fadogia in Major Upgrade

We've gone deep on the science in our TestFACTOR ingredient deep dive, and the short version is that it's one of the few natural testosterone ingredients in recent years with genuine human clinical validation behind it. In Combat Tested 3.0, TestFACTOR® takes the anchor spot, replacing Fadogia Agrestis with a compound that's earned its place.

A Formula Built Around the Evidence

TestFACTOR Logo

The full ingredient stack pairs TestFACTOR® with a well-chosen set of testosterone-supporting staples: Tongkat Ali, Shilajit, DIM, Boron, and Vitamin D, plus ginger root extract and aged garlic for cardiovascular and recovery support. Sold at a very fair price, every ingredient is fully disclosed with no proprietary blends hiding the amounts.

To hear Jocko's own take on supplementation philosophy and what drives product quality at Jocko Fuel, check out our conversation in JOCKO WILLINK | PricePlow Episode #132. Then grab current pricing and deal alerts below:

Jocko Fuel Combat Tested – Deals and Price Drop Alerts

Get Price Alerts

No spam, no scams.

Disclosure: PricePlow relies on pricing from stores with which we have a business relationship. We work hard to keep pricing current, but you may find a better offer.

Posts are sponsored in part by the retailers and/or brands listed on this page.

This area is reserved for Team PricePlow's upcoming videos.

Subscribe to our channel and sign up for notifications so you catch it when it goes live!

Subscribe to PricePlow on YouTube!

Jocko Fuel Combat Tested 3.0 Ingredients

Each 4-capsule serving of Jocko Fuel Combat Tested 3.0 provides:

Jocko Fuel Combat Tested 3.0 Ingredients

  • TestFACTOR® (Mangifera indica Bark Extract, Sphaeranthus indicus Flower Heads Extract) -- 325mg

    TESTFACTOR® is PLT Health Solutions' patented combination of mango (Mangifera indica) bark and East Indian Globe Thistle (Sphaeranthus indicus) flower heads, standardized to key bioactives from each plant. Both have extensive histories in Ayurvedic medicine, but what separates TestFACTOR from the typical "herbal T-booster" category is the clinical depth behind it: four randomized, double-blind, placebo-controlled trials, including studies at the exact 325mg dose found here.

    What Four Clinical Trials Show

    • A 2023 trial in 40 resistance-trained men (ages 18-40) established the foundational performance data at a higher 650mg dose. Over 8 weeks, the TestFACTOR group gained 240% more total strength than placebo, with 500% greater improvements on bench press and leg press. Handgrip strength improved 30% more than the control group, which is notable because grip strength tracks closely with androgenic status in trained men.[1]

      On the hormonal side, free testosterone rose 17% while cortisol dropped 22%, and every measured effect achieved statistical significance against placebo.

    • The 2024 follow-up study -- with 99 men across four arms -- confirmed these effects are meaningful at the 325mg dose too. The 325mg group saw a 30% increase in free testosterone alongside significant strength gains on bench press and leg extension versus placebo.[2]

      The higher-dose arm (650mg) raised free testosterone by 38% and total testosterone by 18%. Both supplemented groups also showed significantly lower cortisol than placebo during the training period.[2] So this trial successfully used the same 325mg daily dose as Combat Tested 3.0.

    • Third, a 12-week trial in 92 healthy men and women ages 55-70 using the 650mg dose alongside a structured at-home exercise program, demonstrated that these effects extend into older populations. That group achieved a 4.2x improvement in lower body strength and a 4.5x improvement in grip strength over placebo. Testosterone increased significantly in the male subjects (p < 0.009).[3]
    • The most directly relevant data for Combat Tested's target user comes from a 2025 clinical trial published as an abstract in Current Developments in Nutrition. This 8-week, placebo-controlled study enrolled 60 healthy, recreationally active men ages 40-65 -- the demographic this product is built for -- at the exact 325mg daily dose. Total testosterone improved significantly versus placebo by week 2, and free testosterone by week 4, with both continuing to rise through week 8.[4]
      TestFACTOR: Testosterone-Boosting Ingredient for Better Sexual Health by PLT Health Solutions

      PLT Health Solutions introduces TestFACTOR, a testosterone-boosting ingredient featuring Mangifera indica and Sphaeranthus indicus. Backed by clinical studies, it enhances testosterone, vitality, and sexual health in middle-aged men, with benefits like improved energy, strength, and quality of life.

      The study also tracked the testosterone:estradiol and free testosterone:cortisol ratios, both of which improved in the TestFACTOR group. Sexual function scores on the CSFQ-14 improved significantly across all five measured domains -- pleasure, frequency, desire, arousal, and orgasm -- with benefits appearing as early as two weeks.[4]

      Energy levels, sleep quality, and perceived stress all improved significantly by week 8 as well. Handgrip strength and lean body mass increased versus placebo, while body fat declined. DHT remained unchanged throughout, indicating TestFACTOR modulates the hormonal environment without the risks tied to DHT elevation.[4]

      You can read more about this study in our article, "TestFACTOR Sexual Health Study: Benefits for Sexual Function, Testosterone, and Quality of Life in Men".

    Mechanisms and Formula Synergies

    TestFACTOR's effects operate through multiple parallel pathways. Mangiferin from the mango bark extract drives potent antioxidant activity and supports mitochondrial biogenesis, making cellular energy production more efficient. The blend also upregulates mTOR (the key driver of muscle protein synthesis), activates nitric oxide pathways for improved blood flow, and inhibits catabolic breakdown of muscle tissue.[2] The cortisol suppression seen across all four trials is mechanistically significant: cortisol has an antagonistic relationship with testosterone, suppressing the hypothalamic-pituitary-gonadal (HPG) axis and reducing luteinizing hormone (LH) secretion. Keeping it lower during training protects the testosterone environment that TestFACTOR is actively building.

    The pairing with Tongkat Ali and Shilajit in this formula by Jocko and his team is well-reasoned. Tongkat Ali addresses sex hormone-binding globulin (SHBG), freeing up bioavailable testosterone, and Shilajit supports mitochondrial energy, the same pathway TestFACTOR drives centrally. These aren't redundant ingredients, they reinforce each other at different points in the hormonal and metabolic chain.

    Jocko Fuel Combat Tested 3.0

    Learn more about TestFACTOR® in our main article, TestFACTOR: Testosterone-Boosting Ingredient for Better Sexual Health by PLT Health Solutions.

  • Ginger Root Extract (Zingiber officinale) - 500mg

    Ginger root extract gets its bioactive punch from gingerols and shogaols, compounds that inhibit COX-1 and COX-2 enzymes and block downstream production of prostaglandins and pro-inflammatory cytokines. For active men, this translates to support for normal post-exercise recovery: a double-blind, placebo-controlled trial found that 2g/day of raw ginger for 11 days reduced muscle soreness ratings following eccentric exercise, and a systematic review of seven analgesic trials concluded that roughly 2g/day may modestly support muscle pain management during resistance training and prolonged running.[5][6]

    The hormonal angle is also worth noting. A 2018 systematic review identified several mechanisms by which ginger may support normal testosterone production: stimulating luteinizing hormone (LH) output, reducing oxidative stress and lipid peroxidation in testicular tissue, and improving blood flow to the Leydig cells where testosterone synthesis occurs.[7] Most of this evidence comes from animal models, so it should be read as directional rather than definitive. The 500mg dose here pairs logically with TestFACTOR's antioxidant and hormonal mechanisms, and ginger also supports healthy GI motility -- a practical benefit when taking a multi-capsule stack daily.

  • Aged Garlic Extract (Allium sativum L.) (1% Allicin) - 500mg

    Aged Garlic Extract (AGE) brings cardiovascular and further hormonal support to Combat Tested 3.0's formula. Unlike raw garlic, the aging process converts unstable organosulfur compounds into stable, bioavailable forms, primarily S-allyl cysteine (SAC) and S-allylmercaptocysteine (SAMC), with stronger antioxidant activity and a well-established safety profile.[8]

    Jocko Fuel Combat Tested 3.0 Benefits

    On the cardiovascular side, a 17-trial meta-analysis found garlic supplementation reduced systolic blood pressure by 3.75 mmHg and diastolic by 3.39 mmHg versus controls.[9] A separate 2024 meta-analysis of 21 RCTs in dyslipidemia patients showed significant reductions in total cholesterol, LDL, and triglycerides.[10] These effects are primarily attributed to garlic's organosulfur compounds stimulating nitric oxide production, promoting vasodilation and supporting healthy blood flow.[11]

    For Combat Tested's hormonal goals, SAC in aged garlic extract shows testosterone-relevant activity in preclinical models. It significantly elevated plasma and testicular testosterone in animals by activating the PKA signaling pathway and upregulating CYP11A (a key steroidogenic enzyme) without altering LH.[12] Separate preclinical research found garlic supplementation increased testicular testosterone while decreasing plasma corticosterone, a pattern that complements the cortisol-lowering effects seen across TestFACTOR's trials.[13]

  • Tongkat Ali Root Extract (1% Eurycomanone) - 300mg

    Tongkat Ali (Eurycoma longifolia) supports the formula's testosterone goals primarily by reducing sex hormone-binding globulin (SHBG), releasing more bioavailable testosterone into circulation. The root's major bioactive, eurycomanone (a quassinoid), drives testosterone production at the Leydig cell level by inhibiting aromatase -- limiting conversion of testosterone to estrogen -- and suppressing phosphodiesterase activity to support steroidogenesis.[14]

    Clinical data across multiple populations supports this. A 4-week trial in 63 moderately stressed adults found tongkat ali supplementation raised testosterone by 37% while reducing cortisol by 16%, with significant improvements in tension, anger, and confusion scores versus placebo.[15] A 12-week RCT in 109 men ages 30 to 55 using 300mg daily showed significant improvements in erectile function, libido, sperm motility, and physical functioning.[16] A 2022 meta-analysis of five RCTs confirmed a significant overall increase in serum total testosterone (SMD = 1.352).[17]

    Jocko Fuel Combat Tested 3.0 Formula

    At 300mg standardized to 1% eurycomanone, this dose matches the Physta RCT range and pairs directly with TestFACTOR's cortisol management and Shilajit's mitochondrial energy support.

  • Shilajit Extract (Asphaltum) - 250mg

    Shilajit is a mineral-rich Himalayan exudate whose key bioactives, fulvic acid and dibenzo-α-pyrones (DBPs), support both testosterone levels and mitochondrial energy production.

    A 90-day, double-blind, placebo-controlled trial in 75 healthy men aged 45-55 found purified shilajit at 500mg daily significantly raised total testosterone by 20.45%, free testosterone by 19.14%, and the precursor hormone DHEAS by 31.35% versus placebo, with LH maintained throughout.[18] A separate 8-week trial in 63 active men found that 500mg/day reduced fatigue-induced strength decline to 8.9% versus 16.0% for placebo, while also lowering serum hydroxyproline, an indirect marker of collagen breakdown.[19]

    The mechanism behind both effects traces back to fulvic acid's role as a cellular transporter: it improves mineral uptake and supports coenzyme Q10 (CoQ10) availability within the mitochondria, which the electron transport chain depends on for efficient ATP synthesis. Preclinical work using the ingredient showed significantly greater post-exercise muscle ATP concentrations and a meaningfully higher adenylate energy charge versus unsupplemented controls, supporting the idea that enhanced mitochondrial efficiency drives the fatigue-resistance outcomes seen in human trials.[19]

    The 250mg dose here falls below the 500mg threshold where both human outcomes reached significance, so its role in Combat Tested 3.0 is reinforcing rather than primary. That said, shilajit's mitochondrial ATP support directly complements TestFACTOR's central mechanism of mitochondrial biogenesis, adding a second input to the same energy and testosterone pathway that anchors this stack.

  • 3,3'-Diindolylmethane (DIM) - 100mg

    Jocko Fuel Combat Tested 3.0

    3,3'-Diindolylmethane (DIM) is the bioactive metabolite formed when indole-3-carbinol (I3C) (a compound found in cruciferous vegetables like broccoli and cabbage) undergoes acid condensation in the stomach.[20] Its job in this formula is estrogen management: as the other ingredients push testosterone higher, increased aromatase activity can convert more of that testosterone to estradiol, shifting the hormonal balance in the wrong direction. DIM helps counteract this by influencing how estrogen gets metabolized downstream.

    A shift towards better estrogen

    Specifically, DIM favors the 2-hydroxy pathway, steering metabolism toward 2-hydroxyestrone (2-OHE1), a comparatively weak estrogen metabolite, and away from 16α-hydroxyestrone (16α-OHE1), which binds estrogen receptors more aggressively. This favorable shift in the 2-OHE1:16α-OHE1 ratio has been confirmed in human trials.[21][22]

    Realize that it's not about removing estrogen. We want estrogen... we just want the right kind of estrogen. DIM supports that shift.

    At 100mg, the dose here aligns with clinical usage, and it pairs logically with Tongkat Ali's SHBG work and TestFACTOR's cortisol suppression to round out the formula's approach to the full hormonal picture.

  • Boron (as Boron Citrate) - 2.5mg

    Boron contributes to this formula through two mechanisms that work directly with the surrounding stack: sex hormone-binding globulin (SHBG) reduction and vitamin D potentiation. A study in 8 healthy men found that one week of boron supplementation significantly raised free testosterone and reduced estradiol, with corresponding drops in all three measured inflammatory markers: hs-CRP fell by approximately 50% and TNF-α by approximately 30%.[23]

    TestFACTOR Sexual Health Study: Benefits for Sexual Function, Testosterone, and Quality of Life in Men

    TestFACTOR study drops serious results! 325mg daily significantly improved sexual function, testosterone levels, energy, and grip strength in healthy men 40-65. Benefits started at just 2 weeks across ALL domains of sexual health.

    The mechanism operates through boron's chemistry as a Lewis acid. It forms reversible covalent bonds with vicinal hydroxyl groups on steroid and vitamin D molecules, inhibiting the microsomal enzymes responsible for their catabolism.[24] Specifically, boron inhibits 24-hydroxylase (CYP24A1), the enzyme primarily responsible for degrading vitamin D, extending its biological half-life. So Jocko Fuel's pairing of boron with the cholecalciferol (vitamin D3) below is well reasoned because the two ingredients reinforce each other. At 2.5mg as boron citrate, the dose is conservative next to the 6 to 10mg used in most hormonal studies, but it covers the micronutrient gap and adds meaningful amplification to a stack already targeting testosterone from multiple directions.

  • Vitamin D (as Cholecalciferol) - 40mcg (190% DV)

    Vitamin D3 (cholecalciferol) fills a micronutrient gap that quietly undermines hormonal health in most men's diets, especially those who aren't out in the sun a bunch. The vitamin D receptor (VDR) and key vitamin D-metabolizing enzymes are expressed throughout the human male reproductive tract, including the Leydig cells where testosterone synthesis occurs.[25] That gives 25-hydroxyvitamin D [25(OH)D] a direct upstream role in androgen production.

    Cross-sectional data from 2,299 men found vitamin D status tracks with testosterone and free androgen index, with both following the same seasonal arc, peaking in August and bottoming out in March.[26] In a 12-month RCT, men who started out deficient and supplemented with 3,332 IU daily saw significant increases in total testosterone (~25%), bioactive testosterone, and free testosterone compared to placebo.[27] A 2019 meta-analysis of eight RCTs found no overall significant effect across the broader study population, which suggests baseline deficiency status determines how much room there is for improvement.[28]

    At 40mcg (1,600 IU), this dose covers daily maintenance needs for most men. The boron in this formula extends its working window by inhibiting its breakdown, bringing the synergy discussed in the section above.

  • Zinc (as Zinc Picolinate) - 15mg (136% DV)

    Jocko Fuel Combat Tested 3.0

    Zinc Picolinate covers a foundational micronutrient gap that quietly impairs normal testosterone production in a significant portion of active men. Zinc is a required cofactor in testosterone biosynthesis, supporting luteinizing hormone (LH) signaling and Leydig cell activity within the hypothalamic-pituitary-gonadal (HPG) axis. Prasad et al. established this relationship directly: dietary zinc restriction in healthy young men dropped serum testosterone by approximately 75% over 20 weeks, while six months of supplementation in marginally deficient older men nearly doubled their levels.[29]

    The training context matters here. Regular exercise increases urinary zinc losses and redistributes zinc away from circulation, raising functional depletion risk in athletes and active men.[30] Research in sedentary men showed that four weeks of zinc supplementation maintained both resting and post-exercise testosterone levels that otherwise declined significantly with fatigue.[31] The picolinate form pairs zinc with picolinic acid, one of the body's natural mineral-transport molecules, for improved absorption. At 15mg, it's the right dose to maintain the hormonal foundation that TestFACTOR, Tongkat Ali, and Shilajit are building on top of.

    We also love the choice of zinc picolinate. From our testing and community feedback, this seems to be the version that moves the needle most when monitoring zinc levels in blood work.

    • Combat Tested 3.0 also provides 90mg calcium and 70mg phosphorus per serving, both delivered as dicalcium phosphate.

How to Use Combat Tested 3.0

  • When to take it: Take 4 capsules once daily, preferably in the morning.
  • With or without food: Can be taken with or without food.
  • Other notes: Pairing your morning dose with a pre-workout is an easy way to consolidate your daily training stack. Consistent daily use is key -- these ingredients work by building a sustained hormonal foundation over time.

Jocko Fuel Combat Tested 3.0: Natural Testosterone Upgrades with TESTFACTOR®

Stacks Well With

  • Jocko Pre-Workout: A natural pairing for training days. The all-natural formulas align in philosophy, and adding a pre-workout to your Combat Tested morning routine covers energy, pump, and testosterone support in one clean stack.
  • Jocko Magnesium: Magnesium supports sleep quality and overnight recovery, both of which directly influence testosterone production. It's the logical nighttime complement to Combat Tested's morning protocol.

Who It's For

  • Men over 30 noticing a drop in energy or drive: Combat Tested 3.0 addresses the multi-pathway nature of age-related testosterone decline with a clinical-grade stack in a single daily dose.
  • Athletes and active guys who want it clean: Fully disclosed, no banned substances, no synthetic hormones. A test booster you can take with confidence whether you train competitively or just want to perform your best.

Conclusion: A Legitimate Test Booster Gets a Legitimate Upgrade

Combat Tested 3.0 earns its "Advanced Testosterone Optimizer" label. TestFACTOR® anchors the formula with four clinical trials behind it, including a recently published study on testosterone, sexual health, and quality of life in men that we covered in our TestFACTOR Sexual Health Study (2025) article. The surrounding stack wisely fills in the gaps: Tongkat ali and shilajit address free testosterone and stress response, DIM supports estrogen metabolism, and boron and vitamin D cover the micronutrient deficits that quietly undermine hormonal health in most men's diets.

PLT Health Solutions Logo

PLT Health Solutions: Growth Through Innovation

The formula swap from fadogia agrestis to TestFACTOR® is the kind of update you want to see from a brand committed to doing it right. It reflects exactly what Jocko Fuel has stood for since the beginning: no shortcuts, and no ingredients that haven't earned their spot.

Track deals and stay current on what's new from Jocko Fuel at PricePlow:

Jocko Fuel Combat Tested – Deals and Price Drop Alerts

Get Price Alerts

No spam, no scams.

Disclosure: PricePlow relies on pricing from stores with which we have a business relationship. We work hard to keep pricing current, but you may find a better offer.

Posts are sponsored in part by the retailers and/or brands listed on this page.

About the Author: PricePlow Staff

PricePlow Staff

PricePlow is a team of supplement industry veterans that include medical students, competitive strength athletes, and scientific researchers who all became involved with dieting and supplements out of personal need.

The team's collective experiences and research target athletic performance and body composition goals, relying on low-toxicity meat-based diets.

No Comments | Posted in , , | Tagged , , , , , , , , , , , , , , , , , , , , , , , , , , .

References

  1. Meher Prasanna Rokkam, et al. "A Proprietary Blend of Sphaeranthus Indicus Flower Head and Mangifera Indica Bark Extracts Increases Muscle Strength and Enhances Endurance in Young Male Volunteers: A Randomized, Double-Blinded, Placebo-Controlled Trial." Food &amp; Nutrition Research, vol. 67, 27 Jan. 2023, doi:10.29219/fnr.v67.8972. https://doi.org/10.29219/fnr.v67.8972
  2. Salter, Dawna, et al. "A Botanical Extract Blend of Mangifera Indica and Sphaeranthus Indicus Combined with Resistance Exercise Training Improves Muscle Strength and Endurance over Exercise Alone in Young Men: A Randomized, Blinded, Placebo-Controlled Trial." Frontiers in Nutrition, vol. 11, 3 May 2024, doi:10.3389/fnut.2024.1393917. https://doi.org/10.3389/fnut.2024.1393917
  3. Salter, Dawna, et al. "Effects of a 12-Week, Home-Based, Calisthenic Exercise Program, with or without a Botanical Supplement, on Muscle Strength, Endurance, and Body Composition in Older Adults." Current Developments in Nutrition, vol. 8, July 2024, p. 102218, doi:10.1016/j.cdnut.2024.102218. https://cdn.nutrition.org/article/S2475-2991(24)00152-5/fulltext
  4. Salter, Dawna, et al. "A Botanical Blend of Sphaeranthus Indicus and Mangifera Indica Extracts Elevates Testosterone Levels, Improves Grip Strength, and Enhances Sexual Function in Healthy Men." Current Developments in Nutrition, vol. 9, May 2025, p. 106073, doi:10.1016/j.cdnut.2025.106073. https://cdn.nutrition.org/article/S2475-2991(25)01533-1/fulltext
  5. Cd, Black, et al. "Ginger (Zingiber Officinale) Reduces Muscle Pain Caused by Eccentric Exercise." The Journal of Pain : Official Journal of the American Pain Society, 1 Sept. 2010. https://pubmed.ncbi.nlm.nih.gov/20418184/
  6. Wilson, Patrick B. "Ginger (Zingiber Officinale) as an Analgesic and Ergogenic Aid in Sport." Journal of Strength and Conditioning Research, vol. 29, no. 10, Oct. 2015, pp. 2980–2995, doi:10.1519/jsc.0000000000001098. https://pubmed.ncbi.nlm.nih.gov/26200194/
  7. Banihani, Saleem Ali. "Ginger and Testosterone." Biomolecules, vol. 8, no. 4, 22 Oct. 2018, p. 119, doi:10.3390/biom8040119. https://pmc.ncbi.nlm.nih.gov/articles/PMC6316093/
  8. Ansary, Johura, et al. "Potential Health Benefit of Garlic Based on Human Intervention Studies: A Brief Overview." Antioxidants, vol. 9, no. 7, 15 July 2020, doi:10.3390/antiox9070619. https://pmc.ncbi.nlm.nih.gov/articles/PMC7402177/
  9. Wang, Hai-Peng, et al. "Effect of Garlic on Blood Pressure: A Meta-Analysis." The Journal of Clinical Hypertension, vol. 17, no. 3, 5 Jan. 2015, pp. 223–231, doi:10.1111/jch.12473. https://pmc.ncbi.nlm.nih.gov/articles/PMC8031974/
  10. Du, Yanbin, et al. "Garlic Consumption Can Reduce the Risk of Dyslipidemia: A Meta-Analysis of Randomized Controlled Trials." Journal of Health Population and Nutrition, vol. 43, no. 1, 7 Aug. 2024, doi:10.1186/s41043-024-00608-1. https://pmc.ncbi.nlm.nih.gov/articles/PMC11308468/
  11. Imaizumi, Vitor Massami, et al. "Garlic: A Systematic Review of the Effects on Cardiovascular Diseases." Critical Reviews in Food Science and Nutrition, 23 Feb. 2022, pp. 1–23, doi:10.1080/10408398.2022.2043821. https://pubmed.ncbi.nlm.nih.gov/35193446/
  12. Rana, Md Masud, et al. "S-Allyl Cysteine Enhances Testosterone Production in Mice and Mouse Testis-Derived I-10 Cells." Molecules, vol. 26, no. 6, 18 Mar. 2021, p. 1697, doi:10.3390/molecules26061697. https://pmc.ncbi.nlm.nih.gov/articles/PMC8003081/
  13. Oi, Yuriko, et al. "Garlic Supplementation Increases Testicular Testosterone and Decreases Plasma Corticosterone in Rats Fed a High Protein Diet." The Journal of Nutrition, vol. 131, no. 8, 1 Aug. 2001, pp. 2150–2156, doi:10.1093/jn/131.8.2150. https://pubmed.ncbi.nlm.nih.gov/11481410/
  14. Low, Bin-Seng, et al. "Eurycomanone, the Major Quassinoid in Eurycoma Longifolia Root Extract Increases Spermatogenesis by Inhibiting the Activity of Phosphodiesterase and Aromatase in Steroidogenesis." Journal of Ethnopharmacology, vol. 149, no. 1, 26 Aug. 2013, pp. 201–207, doi:10.1016/j.jep.2013.06.023. https://pubmed.ncbi.nlm.nih.gov/23810842/
  15. Talbott, Shawn M, et al. "Effect of Tongkat Ali on Stress Hormones and Psychological Mood State in Moderately Stressed Subjects." Journal of the International Society of Sports Nutrition, vol. 10, 26 May 2013, p. 28, doi:10.1186/1550-2783-10-28. https://pmc.ncbi.nlm.nih.gov/articles/PMC3669033/
  16. Ismail, Shaiful Bahari, et al. "Randomized Clinical Trial on the Use of PHYSTA Freeze-Dried Water Extract of Eurycoma Longifolia for the Improvement of Quality of Life and Sexual Well-Being in Men." Evidence-Based Complementary and Alternative Medicine, vol. 2012, 1 Nov. 2012, p. e429268, doi:10.1155/2012/429268. https://pmc.ncbi.nlm.nih.gov/articles/PMC3518798/
  17. Leisegang, Kristian, et al. "Eurycoma Longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials." Medicina, vol. 58, no. 8, 4 Aug. 2022, p. 1047, doi:10.3390/medicina58081047. https://pmc.ncbi.nlm.nih.gov/articles/PMC9415500/
  18. Pandit, S., et al. "Clinical Evaluation of Purified Shilajit on Testosterone Levels in Healthy Volunteers." Andrologia, vol. 48, no. 5, 22 Sept. 2015, pp. 570–575, doi:10.1111/and.12482. https://pubmed.ncbi.nlm.nih.gov/26395129/
  19. Keller, Joshua L., et al. "The Effects of Shilajit Supplementation on Fatigue-Induced Decreases in Muscular Strength and Serum Hydroxyproline Levels." Journal of the International Society of Sports Nutrition, vol. 16, no. 1, 6 Feb. 2019, doi:10.1186/s12970-019-0270-2. https://pmc.ncbi.nlm.nih.gov/articles/PMC6364418/
  20. Amarakoon, Darshika, et al. "Indole-3-Carbinol: Occurrence, Health-Beneficial Properties, and Cellular/Molecular Mechanisms." Annual Review of Food Science and Technology, vol. 14, 27 Mar. 2023, pp. 347–366, doi:10.1146/annurev-food-060721-025531. https://pubmed.ncbi.nlm.nih.gov/36972159/
  21. Dalessandri, Kathie M., et al. "Pilot Study: Effect of 3,3′-Diindolylmethane Supplements on Urinary Hormone Metabolites in Postmenopausal Women with a History of Early-Stage Breast Cancer." Nutrition and Cancer, vol. 50, no. 2, Nov. 2004, pp. 161–167, doi:10.1207/s15327914nc5002_5. https://pubmed.ncbi.nlm.nih.gov/15623462/
  22. Thomson, Cynthia A, et al. "A Randomized, Placebo-Controlled Trial of Diindolylmethane for Breast Cancer Biomarker Modulation in Patients Taking Tamoxifen." Breast Cancer Research and Treatment, vol. 165, no. 1, 2017, pp. 97–107, doi:10.1007/s10549-017-4292-7. https://pmc.ncbi.nlm.nih.gov/articles/PMC5571834/
  23. Naghii, Mohammad Reza, et al. "Comparative Effects of Daily and Weekly Boron Supplementation on Plasma Steroid Hormones and Proinflammatory Cytokines." Journal of Trace Elements in Medicine and Biology: Organ of the Society for Minerals and Trace Elements (GMS), vol. 25, no. 1, 1 Jan. 2011, pp. 54–58, doi:10.1016/j.jtemb.2010.10.001. https://pubmed.ncbi.nlm.nih.gov/21129941/
  24. Pizzorno, Lara. "Nothing Boring about Boron." Integrative Medicine: A Clinician's Journal, vol. 14, no. 4, Aug. 2015, p. 35. https://pmc.ncbi.nlm.nih.gov/articles/PMC4712861/
  25. Blomberg Jensen, M., et al. "Vitamin D Receptor and Vitamin D Metabolizing Enzymes Are Expressed in the Human Male Reproductive Tract." Human Reproduction, vol. 25, no. 5, 18 Feb. 2010, pp. 1303–1311, doi:10.1093/humrep/deq024. https://pubmed.ncbi.nlm.nih.gov/20172873/
  26. Wehr, E., et al. "Association of Vitamin D Status with Serum Androgen Levels in Men." Clinical Endocrinology, Dec. 2009, doi:10.1111/j.1365-2265.2009.03777.x. https://pubmed.ncbi.nlm.nih.gov/20050857/
  27. Pilz, S, et al. "Effect of Vitamin D Supplementation on Testosterone Levels in Men." Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones et Metabolisme, vol. 43, no. 3, 2011, pp. 223–5, doi:10.1055/s-0030-1269854. https://pubmed.ncbi.nlm.nih.gov/21154195/
  28. Hosseini Marnani, Elham, et al. "The Effect of Vitamin D Supplementation on the Androgenic Profile in Men: A Systematic Review and Meta-Analysis of Clinical Trials." Andrologia, vol. 51, no. 9, Oct. 2019, p. e13343, doi:10.1111/and.13343. https://pubmed.ncbi.nlm.nih.gov/31332821/
  29. Prasad, Ananda S., et al. "Zinc Status and Serum Testosterone Levels of Healthy Adults." Nutrition, vol. 12, no. 5, May 1996, pp. 344–348, doi:10.1016/s0899-9007(96)80058-x. https://pubmed.ncbi.nlm.nih.gov/8875519/
  30. Toro-Román, Víctor, et al. "Influence of Physical Training on Intracellular and Extracellular Zinc Concentrations." Journal of the International Society of Sports Nutrition, vol. 19, no. 1, 3 Apr. 2022, pp. 110–125, doi:10.1080/15502783.2022.2054665. https://pmc.ncbi.nlm.nih.gov/articles/PMC9116397/
  31. Kilic M. "Effect of Fatiguing Bicycle Exercise on Thyroid Hormone and Testosterone Levels in Sedentary Males Supplemented with Oral Zinc." Neuro Endocrinology Letters, vol. 28, no. 5, 2025. https://pubmed.ncbi.nlm.nih.gov/17984944/

Comments and Discussion (Powered by the PricePlow Forum)