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TestoJack 100

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4.5
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(1008 ratings)
Tribulus 250 mg
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Score80
A coherent tongkat-ali, tribulus, zinc, magnesium, and B6 formula offers broad basic support. Modest doses and incomplete tribulus standardization limit expected impact.
How scoring works
Quantity:120 Capsule(s) • (60 servings)
Goals:
Testosterone Support

Score 80

A coherent tongkat-ali, tribulus, zinc, magnesium, and B6 formula offers broad basic support. Modest doses and incomplete tribulus standardization limit expected impact.
How scoring works
$27.51($0.45 per serving)
Daily Vita
$ 27.80
iHerb
$ 29.39
Vitacost
$ 31.07
Amazon
$ 29.39
Pure Formulas
$ 27.51
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Analysis

Zinc, magnesium, and vitamin B6 provide basic nutrient support, while branded tongkat ali supplies the clearest hormone-oriented botanical. Tribulus adds a traditional libido pathway and is identified as an extract.

The tongkat ali amount is modest, and tribulus lacks a quantified saponin percentage or plant-part detail. Mineral amounts are supportive rather than intensive, so the product is broader than any single serving component is deep.

The larger bottle supports a longer routine. Serving value is favorable for the branded tongkat and mineral combination. It suits users who want a moderate multi-pathway formula and understand that the design does not guarantee a testosterone change.

Who is it for
  • Adults seeking a moderate male-vitality formula
  • Users wanting minerals with tongkat ali
  • People who prefer clearly listed active amounts
Best for
  • Broad testosterone-oriented routines
  • Combining nutrient and botanical support
  • Users prioritizing branded tongkat ali

Pros

  • Uses a branded tongkat ali extract
  • Includes zinc, magnesium, and vitamin B6
  • Every active amount is disclosed

Cons

  • Tongkat ali amount is modest
  • Tribulus saponin percentage is not stated
  • No vitamin D or boron

Warnings

  • Tongkat ali may feel stimulating and can be a poor fit near bedtime or with other stimulants.
  • Magnesium aspartate may cause loose stools or stomach discomfort in sensitive users.
  • Tribulus and tongkat ali affect hormone-related pathways and need extra care with hormone-sensitive conditions or treatment.

Nutrient quality

82 Highest impact

Useful mineral forms and branded tongkat ali strengthen the formulation. Modest active amounts and incomplete tribulus standardization limit likely depth.

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Ingredient transparency

85 Highest impact

All active amounts are clear and unblended. Complete directions, inactive ingredients, and a quantified tribulus standard remain missing.

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Customer satisfaction

68 High impact

The supplied average is strong and supported by substantial volume. No review themes were provided, so consistency and purpose-specific experience cannot be assessed.

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Value for money

83 Highest impact

Useful forms and an accessible serving cost support good value. Modest dosing keeps it from matching more concentrated alternatives.

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Goals

Testosterone Support
Impact
High effect
B- Goal FitC+ Strength of SupportC+ CoverageA Formula Quality
Magnesium · 140 mgZinc · 9 mg

Zinc, magnesium, vitamin B6, standardized tongkat ali, and tribulus create a coherent multi-pathway testosterone formula. Several amounts are modest, so the design is stronger than the likely contribution of each serving.

LJ100 standardization and specific mineral forms improve transparency. Tribulus may support libido more reliably than testosterone, and the relatively low tongkat ali and mineral amounts limit expectations.

Study evidence
Magnesium Disputed 5 studies
Tribulus Disputed 13 studies
Zinc Disputed 7 studies

Ingredients

IngredientAmount per serving
Vitamin B6 (Pyridoxine Hydrochloride)
3 mg
Magnesium (Magnesium Aspartate)
140 mg
Zinc Mono-L-Methionine Sulfate
9 mg
Tribulus terrestris extract (Saponins)
250 mg
LJ100 (Eurypeptides)
50 mg
Gluten Free Men 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
Tribulus (Saponins) · 250 mg OverallScore57
D- Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyC Value

The extract lacks a disclosed saponin percentage and plant-part source, leaving active quality uncertain. Its 250 mg amount reaches the entry-level potency range, and the exact amount is clearly listed. Cost efficiency is moderate because the active strength cannot be verified.

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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Effects of Tribulus (Tribulus terrestris L.) Supplementation on Erectile Dysfunction and Testosterone Levels in Men-A Systematic Review of Clinical Trials.
    Vilar Neto JO; de Moraes WMAM; Pinto DV; da Silva CA; Caminha JSR; Nunes Filho JCC; Reis CEG; Prestes J; Santos HO; De Francesco Daher E · Nutrients · 2025
    Systematic review483 participants10 studies pooledTestosterone Support forTribulus
  2. Tribulus terrestris versus placebo in the treatment of erectile dysfunction: A prospective, randomized, double blind study.
    Santos CA; Reis LO; Destro-Saade R; Luiza-Reis A; Fregonesi A · Actas urologicas espanolas · 2015
    Randomized trial30 participantsTestosterone Support forTribulus
  3. The aphrodisiac herb Tribulus terrestris does not influence the androgen production in young men.
    Neychev VK; Mitev VI · Journal of ethnopharmacology · 2005
    Randomized trial21 participantsTestosterone Support forTribulus
  4. Efficacy of Tribulus Terrestris for the treatment of premenopausal women with hypoactive sexual desire disorder: a randomized double-blinded, placebo-controlled trial.
    Vale FBC; Zanolla Dias de Souza K; Rezende CR; Geber S · Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology · 2018
    Randomized trial40 participantsTestosterone Support forTribulus
  5. Do "testosterone boosters" really increase serum total testosterone? A systematic review.
    Morgado A; Tsampoukas G; Sokolakis I; Schoentgen N; Urkmez A; Sarikaya S · International journal of impotence research · 2024
    Systematic review3 studies pooledTestosterone Support forTribulus
  6. The Effects of 6 Weeks of Tribulus terrestris L. Supplementation on Body Composition, Hormonal Response, Perceived Exertion, and CrossFit® Performance: A Randomized, Single-Blind, Placebo-Controlled Study.
    Fernández-Lázaro D; Mielgo-Ayuso J; Del Valle Soto M; Adams DP; González-Bernal JJ; Seco-Calvo J · Nutrients · 2021
    Randomized trial30 participantsTestosterone Support forTribulus
  7. The effect of five weeks of Tribulus terrestris supplementation on muscle strength and body composition during preseason training in elite rugby league players.
    Rogerson S; Riches CJ; Jennings C; Weatherby RP; Meir RA; Marshall-Gradisnik SM · Journal of strength and conditioning research · 2007
    Randomized trial22 participantsTestosterone Support forTribulus
  8. Beyond tribulus (Tribulus terrestris L.): The effects of phytotherapics on testosterone, sperm and prostate parameters.
    Santos HO; Howell S; Teixeira FJ · Journal of ethnopharmacology · 2019
    Narrative reviewTestosterone Support forTribulus
  9. Prospective Analysis on the Effect of Botanical Medicine (Tribulus terrestris) on Serum Testosterone Level and Semen Parameters in Males with Unexplained Infertility.
    Roaiah MF; Elkhayat YI; Abd El Salam MA; Din SFG · Journal of dietary supplements · 2019
    Single-arm trial30 participantsTestosterone Support forTribulus
  10. Pilot Study on the Effect of Botanical Medicine (Tribulus terrestris) on Serum Testosterone Level and Erectile Function in Aging Males With Partial Androgen Deficiency (PADAM).
    Roaiah MF; El Khayat YI; GamalEl Din SF; Abd El Salam MA · Journal of sex & marital therapy · 2017
    Single-arm trial30 participantsTestosterone Support forTribulus
  11. Magnesium and anabolic hormones in older men.
    Maggio M; Ceda GP; Lauretani F; Cattabiani C; Avantaggiato E; Morganti S; Ablondi F; Bandinelli S; Dominguez LJ; Barbagallo M; Paolisso G; Semba RD; Ferrucci L · International journal of andrology · 2012
    Cohort study399 participantsTestosterone Support forMagnesium
  12. Analysis of the relationship between the blood concentration of several metals, macro- and micronutrients and endocrine disorders associated with male aging.
    Rotter I; Kosik-Bogacka DI; Dołęgowska B; Safranow K; Kuczyńska M; Laszczyńska M · Environmental geochemistry and health · 2017
    Cross-sectional study313 participantsTestosterone Support forMagnesium
  13. Effect of magnesium supplementation in improving hyperandrogenism, hirsutism, and sleep quality in women with polycystic ovary syndrome: A randomized, placebo-controlled clinical trial.
    Gholizadeh-Moghaddam M; Ghasemi-Tehrani H; Askari G; Jaripur M; Clark CCT; Rouhani MH · Health science reports · 2024
    Randomized trial64 participantsTestosterone Support forMagnesium
  14. The effects of trace element supplementation on glycolipid metabolism in PCOS: a systematic review and meta-analysis.
    Yang L; Gao Y; Zhao W; Qi Y; Duo X; Wang H · Frontiers in nutrition · 2025
    Meta-analysis1,600 participants25 studies pooledTestosterone Support forMagnesium
  15. Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects at rest and after exhaustion.
    Cinar V; Polat Y; Baltaci AK; Mogulkoc R · Biological trace element research · 2011
    Non-randomized trial20 participantsTestosterone Support forMagnesium
  16. Tribulus terrestris versus placebo in the treatment of erectile dysfunction and lower urinary tract symptoms in patients with late-onset hypogonadism: A placebo-controlled study.
    GamalEl Din SF; Abdel Salam MA; Mohamed MS; Ahmed AR; Motawaa AT; Saadeldin OA; Elnabarway RR · Urologia · 2019
    Randomized trial70 participantsTestosterone Support forTribulus
  17. Efficacy of Tribulus terrestris for the treatment of hypoactive sexual desire disorder in postmenopausal women: a randomized, double-blinded, placebo-controlled trial.
    de Souza KZ; Vale FB; Geber S · Menopause (New York, N.Y.) · 2018
    Randomized trial45 participantsTestosterone Support forTribulus
  18. Effect of oral administration of Tribulus terrestris extract on semen quality and body fat index of infertile men.
    Salgado RM; Marques-Silva MH; Gonçalves E; Mathias AC; Aguiar JG; Wolff P · Andrologia · 2018
    Single-arm trial65 participantsTestosterone Support forTribulus
  19. Environmental exposure to metals and male reproductive hormones: circulating testosterone is inversely associated with blood molybdenum.
    Meeker JD; Rossano MG; Protas B; Padmanahban V; Diamond MP; Puscheck E; Daly D; Paneth N; Wirth JJ · Fertility and sterility · 2010
    Cross-sectional study219 participantsTestosterone Support forZinc
  20. Nonpharmacological Interventions for the Management of Testosterone and Sperm Parameters: A Scoping Review.
    Santos HO; Cadegiani FA; Forbes SC · Clinical therapeutics · 2022
    Scoping reviewTestosterone Support forZinc
  21. Zinc is an Essential Element for Male Fertility: A Review of Zn Roles in Men's Health, Germination, Sperm Quality, and Fertilization.
    Fallah A; Mohammad-Hasani A; Colagar AH · Journal of reproduction & infertility · 2020
    Narrative reviewTestosterone Support forZinc
  22. Clinical, endocrinological and biochemical effects of zinc deficiency.
    Prasad AS · Clinics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc
  23. Clinical, endocrinologic, and biochemical effects of zinc deficiency.
    Prasad AS · Special topics in endocrinology and metabolism · 1986
    Narrative reviewTestosterone Support forZinc