• – Supports increases in both total and free testosterone*
  • – Creates anabolic bodily state*
  • – Helps block estrogen*
  • – May lower cortisol levels*
  • – Amplifies muscle protein synthesis*
  • – Includes the super nitric oxide booster Nitrogisine® to help nutrient distribution*

SKU: 9440 Category:

Test Black™ was formulated with a single goal in mind…to maximize natural testosterone production and promote all things male in you. Countless hours were spent on the research and development of Test Black™. Only the best, clinically validated ingredients were painstakingly chosen and dosed at efficacious levels. The final product….an aggressive cutting edge formula that enhances test levels, bolsters performance, and helps pack on lean, hard muscle. Take a look at a few key ingredients in Test Black’s™ open label formula and see why it is an anabolic animal’s dream come true:

Boron – Suggested in human clinical research to support free testosterone and decrease estradiol in just 7 days.
5-Alpha-Hydroxy-Laxogenin – A natural plant sterol which possesses an anabolic/androgenic ratio similar to Anavar, one of the most efficient anabolic substances, without the harmful side effects.
LongJax® 20:1 Extract – Shown to significantly raise both total and free testosterone levels while simultaneously lowering cortisol.
Nitrosigine – A “super nitric oxide” booster that opens up blood pathways into the muscles to improve nutrient distribution.
Maca Extract – To help block the body’s production of estrogen while boosting testosterone levels.

Compare any other so-called “test booster” on the market to Test Black™ and we think you’ll see it pales in comparison. No shortcuts were taken and no expense was spared in making Test Black™ a potent, test boosting powerhouse. With Test Black™ you will leave weak at the door and total domination will ensue in the gym and on the field. Hands down, Test Black™ is sport’s nutritions most advanced test booster….period!

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Ingredient Profile

Product Description


Boron is what is known as a trace mineral. This means that our bodies benefit from it as a vital nutrient, but only in very, very small trace amounts.

  • Boron has been implicated in increasing free testosterone and serum DHT levels.
  • At the same time boron acts as an anti-estrogen and decreases sex hormone binding globulin (SHBG).
  • A study conducted by Naghii et al. (2011) found men who supplemented with boron for 7 consecutive days increased free testosterone and dihydrotestosterone (DHT) levels by 28% and 10% respectively, while also decreasing free estrogen levels by 39%.


Zinc is vital for several important physiological roles in the body and is needed for many enzymatic reactions including those necessary to stimulate muscle protein synthesis.

  • Zinc deficiency has been linked to low IGF-1 Levels and Growth Hormone.
  • Zinc also supports optimal testosterone levels and may increase testosterone at rest and after exercise.
  • A 2006 study by Killic et al. found wrestlers who supplemented with Zinc for 4 weeks were able preserve circulating testosterone and thyroid hormone concentrations, which declined in placebo due to the exhaustive workload.


Magnesium is an essential mineral and electrolyte. It is involved in protein synthesis, ATP formation, metabolism of carbohydrates and fats, and bone strength.

  • Magnesium deficiencies are the second most common deficiency in developed countries. A lack of magnesium will raise blood pressure and reduce insulin sensitivity.
  • Increases in free and total testosterone have been noted in sedentary and athletic populations when supplementing with magnesium supplementation. It also acts as a muscle relaxer and may improve aerobic performance.
  • Brilla et al. (1992) discovered 26 untrained subjects who participated in a 7 week strength training program in conjunction with magnesium supplementation were able to increase testosterone relative to baseline.

Vitamin B6:

B6 is a water soluble vitamin that is important to various metabolic reactions that occur in the body. It is also a coenzyme for protein metabolism and nervous and immune system function.

  • B6 is also involved in the synthesis of hormones and red blood cells.
  • Vitamin B6 may have some benefits with regard to increasing the rate of synthesis of testosterone.
  • B6 may also be able to increase levels of growth hormone.

Vitamin D3:

Vitamin D is associated with a wide range of benefits, including increased cognition, immune health, bone health and well-being.

  • Supplementation can also reduce the risks of cancer, heart disease, diabetes and multiple sclerosis.
  • People deficient in vitamin D may also experience increased testosterone levels after supplementation.

5-Alpha Hydroxy Laxogenin:

5-Alpha-Hydroxy-Laxogenin is a natural anabolic supplement derived from plants.  It is a sapogenin, a steroidal constituent of the non-sugar portion of a saponin, isolated from the plant Smilax Sieboldii.

  • 5-Alpha-Hydroxy-Laxogenin possesses an anabolic/androgenic ratio similar to Anavar, one of the most efficient anabolic substances, without the harmful side effects.
  • It is believed to work by reducing sex hormone binding globulin (SHBG) hormones, which promotes higher levels of free testosterone and increases nitrogen retention that leads to anabolism.
  • Research in humans has shown 5-Alpha-Hydroxy-Laxogenin increases muscle strength and lean body mass, even without exercise. Other benefits include fat loss and improved insulin sensitivity.
  • Other tests have shown 200% increases in protein synthesis after 5-Alpha-Hydroxy-Laxogenin supplementation.

Nitrosigine Arginine Inositol Silicate:

Arginine (NITROSIGINE) is a precursor to nitric oxide and expands blood vessels to optimize blood flow. Silicate is contained within the walls of the arteries to help maintain their structural integrity.

  • These ingredients works in synergy to help increase the blood flow and the structural integrity of the artery walls.
  • Preclinical data has shown that Nitrosigine is superior to standard arginine… with 2x the blood flow in vasodilatation response.

LongJax® 20:1 Extract:

LongJaX® is a powdered water-extract from the roots of Eurycoma longifolia Jack (ELJ), a South East Asian plant.

  • Also known as Tongkat Ali, Eurycoma significantly raises both total and free testosterone levels while simultaneously lowering cortisol.
  • A higher testosterone to cortisol ratio has long been considered a marker of an increased anabolic state.
  • Eurycoma works to enhance testosterone levels by a few different mechanisms. The first is through direct stimulation of the Leydig cells in the testicles to increase testosterone production. Secondly it inhibits the conversion of testosterone into estrogen. Lastly Eurycoma frees up more testosterone by lowering sex hormone binding globulins.
  • Talbott et al. (2013) found supplementation of eurycoma to stressed adults for a period of four weeks was associated with an improved stress hormone ratio (cortisol reduced by 16% and testosterone increased by 37%) alongside improvements in subjective ratings of stress.

Maca 4:1 Extract:

Maca is a plant in the broccoli family. Maca has traditionally been used as an aphrodisiac.

  • Men supplementing with maca have been known to experience an increase in sperm production. Maca also appears to be a potent suppressor of prostate hypertrophy.
  • Preliminary research also suggests maca can protect the brain from damage, improve bone health, and even improve cognitive ability in healthy people.
  • For the purposes of Test Black, maca may help block the body’s production of estrogen while boosting testosterone levels.

Ashwaganda Extract:

Ashwagandha is classified as an adaptogen, meaning it helps the body deal with physical, emotional, and psychological stressors.

  • It is a  staple in Ayurvedic medicine. For good reason too, as it reduces cortisol, increases exercise performance, and beneficially modulates sex hormone profiles.
  • It also shows promise for relieving insomnia and stress-induced bouts of depression.
  • Ashwagandha can improve the formation of memories, and may be able to treat Alzheimer’s disease due to its ability to prevent the degradation of brain cells, making the herb a neuroprotectant.
  • In a study conducted by Andrade et al. (2000), six weeks supplementation of Ashwagandha in persons with diagnosed generalized anxiety disorder (mixed anxiety and depression) noted significant improvements in both depression and anxiety symptoms.

Horny Goat Weed Extract:

Horny goat weed that is often used as an erectile aid and aphrodisiac.

  • It seems to have the mechanisms to increase testosterone, but no human studies exist on the subject matter.
  • Horny goat weed was shown in one rat study to increase testosterone levels by 3x over a 7 day period compared to a control group.

Urtica Dioica:

Divanil (aka 3,4-divanillyltetrahydrofuran, DVTHF) is an extract from the stinging nettle root (Urtica dioica). DVTHF exerts its effects by acting on testosterone transport proteins.

  • Testosterone in the human body exists either in a free circulating form or in inactive form bound to transport proteins. The transport proteins to which testosterone binds are albumin and sex hormone binding globulin (SHBG).
  • DVTHF binds with very high affinity to SHBG. It’s hypothesized that by binding to SHBG, DVTHF will increase the concentration of free testosterone.

Safed Musli Extract:

Also known as chlorophytum borivilianum, safed musli is an herb that has traditionally been used as a aphrodisiac and adaptogen.

  • It is rich source of over 25 alkaloids, vitamins, minerals, proteins, carbohydrates, steroid, saponins and polysaccharides.
  • According to some studies Safed Musli increases serum testosterone levels and improves testicular function.

Q: What is the best way to take Test Black?
A: Take one serving (4 capsules) in the AM with 8-10oz of water.

Q: Do natural testosterone boosters really work?
A: Yes..dependent upon the right ingredients being used. The ingredients in Test Black have been confirmed by research to boost natural testosterone levels for varying periods of time.

Q: What other MuscleSport products do you recommend stacking with Test Black?
A: If putting lean, hard muscle on in the goal we recommend stacking Test Black with Rhino Black, BCAA Revolution, Lean Whey, CXS Revolution, and cycling with PCT Revolution.


1. Nielsen, F. H., Hunt, C. D., Mullen, L. M., & Hunt, J. R. (1987). Effect of dietary boron on mineral, estrogen, and testosterone metabolism in postmenopausal women. The FASEB journal, 1(5), 394-397.
2. Naghii, M. R., Mofid, M., Asgari, A. R., Hedayati, M., & Daneshpour, M. S. (2011). Comparative effects of daily and weekly boron supplementation on plasma steroid hormones and proinflammatory cytokines. Journal of Trace Elements in Medicine and Biology, 25(1), 54-58.

1. Brilla, L. R., & Conte, V. (2000). Effects of a novel zinc-magnesium formulation on hormones and strength. J Exerc Physiol Online, 3(4), 26-36.
2. Kilic, M., Baltaci, A. K., Gunay, M., Gökbel, H., Okudan, N., & Cicioglu, I. (2005). The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc. Neuro endocrinology letters, 27(1-2), 247-252.
3. Kilic, M. (2007). Effect of fatiguing bicycle exercise on thyroid hormone and testosterone levels in sedentary males supplemented with oral zinc. Neuro endocrinology letters, 28(5), 681-685.
4. Jalali, G. R., Roozbeh, J., Mohammadzadeh, A., Sharifian, M., Sagheb, M. M., Jahromi, A. H., … & Afshariani, R. (2010). Impact of oral zinc therapy on the level of sex hormones in male patients on hemodialysis. Renal failure,32(4), 417-419.
5. Netter, A., Nahoul, K., & Hartoma, R. (1981). Effect of zinc administration on plasma testosterone, dihydrotestosterone, and sperm count. Archives of andrology, 7(1), 69-73.
6. Tupe, R. P., & Chiplonkar, S. A. (2009). Zinc supplementation improved cognitive performance and taste acuity in Indian adolescent girls. Journal of the American College of Nutrition, 28(4), 388-396.
7. Prasad, A. S., Beck, F. W., Bao, B., Fitzgerald, J. T., Snell, D. C., Steinberg, J. D., & Cardozo, L. J. (2007). Zinc supplementation decreases incidence of infections in the elderly: effect of zinc on generation of cytokines and oxidative stress. The American journal of clinical nutrition,85(3), 837-844.

1. Cinar, V., Polat, Y., Baltaci, A. K., & Mogulkoc, R. (2011). Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects at rest and after exhaustion. Biological trace element research, 140(1), 18-23.
2. van der Plas, A. A., Schilder, J. C., Marinus, J., & van Hilten, J. J. (2013). An explanatory study evaluating the muscle relaxant effects of intramuscular magnesium sulphate for dystonia in complex regional pain syndrome. The Journal of Pain, 14(11), 1341-1348.
3. Hatzistavri, L. S., Sarafidis, P. A., Georgianos, P. I., Tziolas, I. M., Aroditis, C. P., Zebekakis, P. E., … & Lasaridis, A. N. (2009). Oral magnesium supplementation reduces ambulatory blood pressure in patients with mild hypertension. American journal of hypertension, 22(10), 1070-1075.
4. Golf, S. W., Bender, S., & Grüttner, J. (1998). On the significance of magnesium in extreme physical stress. Cardiovascular Drugs and Therapy,12(2), 197-202.
5. Carpenter, T. O., DeLucia, M. C., Zhang, J. H., Bejnerowicz, G., Tartamella, L., Dziura, J., … & Cohen, D. (2006). A randomized controlled study of effects of dietary magnesium oxide supplementation on bone mineral content in healthy girls. The Journal of Clinical Endocrinology & Metabolism, 91(12), 4866-4872.
6. Held, K., Antonijevic, I. A., Künzel, H., Uhr, M., Wetter, T. C., Golly, I. C., … & Murck, H. (2002). Oral Mg (2+) supplementation reverses age-related neuroendocrine and sleep EEG changes in humans. Pharmacopsychiatry,35(4), 135-143.
7. Brilla, L. R., & Haley, T. F. (1992). Effect of magnesium supplementation on strength training in humans. Journal of the American College of Nutrition,11(3), 326-329.

Vitamin B6:
1. Czaja, J., Lebiedzinska, A., Marszall, M., & Szefer, P. (2011). Evaluation for magnesium and vitamin B6 supplementation among Polish elite athletes.Roczniki Państwowego Zakładu Higieny, 62(4).
2. Manore, M. M. (2000). Effect of physical activity on thiamine, riboflavin, and vitamin B-6 requirements. The American journal of clinical nutrition, 72(2), 598s-606s.
3. http://vitaminb6benefits.com/vitamin-b6-benefits

Vitamin D3:
1. Pilz, S., Frisch, S., Koertke, H., Kuhn, J., Dreier, J., Obermayer-Pietsch, B., … & Zittermann, A. (2011). Effect of vitamin D supplementation on testosterone levels in men. Hormone and Metabolic Research, 43(3), 223.
2. Wehr, E., Pilz, S., Boehm, B. O., März, W., & Obermayer‐Pietsch, B. (2010). Association of vitamin D status with serum androgen levels in men.Clinical endocrinology, 73(2), 243-248.

5-Alpha Hydroxy Laxogenin:
1. Iglesias-Arteaga, M. A., Símuta-Lopez, E. M., Xochihua-Moreno, S., Viñas-Bravo, O., Smith, S. M., Meza Reyes, S., & Sandoval-Ramírez, J. (2005). A convenient procedure for the synthesis of 3beta-hydroxy-6-oxo-5alpha-steroids: aplication to the synthesis of laxogenin. Journal of the Brazilian Chemical Society, 16(3A), 381-385.
2. Syrov, V. N., & Kurmukov, A. G. (1975). [Experimental study of the anabolic activity of 6-ketoderivatives of certain natural sapogenins]. Farmakologiia i toksikologiia, 39(5), 631-635.
3. Esposito, D., Komarnytsky, S., Shapses, S., & Raskin, I. (2011). Anabolic effect of plant brassinosteroid. The FASEB Journal, 25(10), 3708-3719.
4. Fasciola, A. A. (2014). U.S. Patent Application No. 13/999,672.

Nitrosigine Arginine Inositol Silicate:
1. Kalman, D. S., Feldman, S., Samson, A., & Krieger, D. R. (2015). A clinical evaluation to determine the safety, pharmacokinetics, and pharmacodynamics of an inositol-stabilized arginine silicate dietary supplement in healthy adult males. Clinical pharmacology: advances and applications, 7, 103.

LongJax® 20:1 Extract:
1. Talbott, S. M., Talbott, J. A., George, A., & Pugh, M. (2013). Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed. Journal of the International Society of Sports Nutrition, 10, 28.
2. Ismail, S. B., Wan Mohammad, W. M. Z., George, A., Nik Hussain, N. H., Musthapa Kamal, Z. M., & Liske, E. (2012). 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, 2012.
3. Hamzah, S., & Yusof, A. (2003). 007 THE ERGOGENIC EFFECTS OF EURYCOMA LONGIFOLIA JACK: A PILOT STUDY. Br J Sports Med, 37, 464-470.
4. Tambi, M. I. B. M., Imran, M. K., & Henkel, R. R. (2012). Standardised water‐soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late‐onset hypogonadism?. Andrologia,44(s1), 226-230.
5. George, A., & Henkel, R. (2014). Phytoandrogenic properties of Eurycoma longifolia as natural alternative to testosterone replacement therapy.Andrologia, 46(7), 708-721.
6. Talbott, S. M., Talbott, J. A., George, A., & Pugh, M. (2013). Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed. Journal of the International Society of Sports Nutrition, 10, 28.

Maca 4:1 Extract:
1. Brooks, N. A., Wilcox, G., Walker, K. Z., Ashton, J. F., Cox, M. B., & Stojanovska, L. (2008). Beneficial effects of Lepidium meyenii (Maca) on psychological symptoms and measures of sexual dysfunction in postmenopausal women are not related to estrogen or androgen content.Menopause, 15(6), 1157-1162.
2. Gonzales, G. F., Cordova, A., Vega, K., Chung, A., Villena, A., Góñez, C., & Castillo, S. (2002). Effect of Lepidium meyenii (MACA) on sexual desire and its absent relationship with serum testosterone levels in adult healthy men.andrologia, 34(6), 367-372.
3. Zenico, T., Cicero, A. F. G., Valmorri, L., Mercuriali, M., & Bercovich, E. (2009). Subjective effects of Lepidium meyenii (Maca) extract on well‐being and sexual performances in patients with mild erectile dysfunction: a randomised, double‐blind clinical trial. Andrologia, 41(2), 95-99.
4. Dording, C. M., Fisher, L., Papakostas, G., Farabaugh, A., Sonawalla, S., Fava, M., & Mischoulon, D. (2008). A Double‐Blind, Randomized, Pilot Dose‐Finding Study of Maca Root (L. Meyenii) for the Management of SSRI‐Induced Sexual Dysfunction. CNS Neuroscience & Therapeutics, 14(3), 182-191.

Ashwaganda Extract:
1. Andrade, C., Aswath, A., Chaturvedi, S. K., Srinivasa, M., & Raguram, R. (2000). A double-blind, placebo-controlled evaluation of the anxiolytic efficacy ff an ethanolic extract of withania somnifera. Indian journal of psychiatry, 42(3), 295.
2. Chandrasekhar, K., Kapoor, J., & Anishetty, S. (2012). A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian journal of psychological medicine, 34(3), 255.
3. Cooley, K., Szczurko, O., Perri, D., Mills, E. J., Bernhardt, B., Zhou, Q., & Seely, D. (2009). Naturopathic care for anxiety: a randomized controlled trial ISRCTN78958974. PLoS One, 4(8), e6628.

Horny Goat Weed Extract:
1. Zhang, Z. B., & Yang, Q. T. (2006). The testosterone mimetic properties of icariin. Asian journal of andrology, 8(5), 601-605.

Urtica Dioica:
1. Schöttner, M., Ganßer, D., & Spiteller, G. (1997). Lignans from the roots of Urtica dioica and their metabolites bind to human sex hormone binding globulin (SHBG). Planta medica, 63(6), 529-532.
2. Hryb, D. J., Khan, M. S., Romas, N. A., & Rosner, W. (1995). The effect of extracts of the roots of the stinging nettle (Urtica dioica) on the interaction of SHBG with its receptor on human prostatic membranes. Planta medica,61(1), 31-32.
3. Hirano, T., Homma, M., & Oka, K. (1994). Effects of stinging nettle root extracts and their steroidal components on the Na+, K (+)-ATPase of the benign prostatic hyperplasia. Planta medica, 60(1), 30-33.

Safed Musli Extract:
1. McCarthy, Cameron G., et al. A Dietary Supplement Containing Chlorophytum Borivilianum and Velvet Bean Improves Sleep Quality in Men and Women.” Integrative Medicine Insights 7 (2012): 7.
2. Alleman Jr et al. A Blend of Chlorophytum Borivilianum and Velvet Bean Increases Serum Growth Hormone in Exercise-Trained Men. Nutrition & Metabolic Insights (2011)
3. Thakur, Gulab S., et al. Chlorophytum borivilianum: a white gold for biopharmaceuticals and neutraceuticals. Current pharmaceutical biotechnology 10.7 (2009): 650-666.
4. Thakur, Mayank, et al. Improvement of penile erection, sperm count and seminal fructose levels in vivo and nitric oxide release in vitro by ayurvedic herbs. Andrologia 43.4 (2011): 273-277.
5. Thakur, Mayank, et al. A comparative study on aphrodisiac activity of some ayurvedic herbs in male albino rats. Archives of sexual behavior 38.6 (2009): 1009-1015.
6. Thakur, Mayank, and V. K. Dixit. Effect of some vajikaran herbs on pendiculation activities and in vitro sperm count in male. Sexuality and Disability 25.4 (2007): 203-207.
7. Kenjale, Rakesh, Riddhi Shah, and Sadhana Sathaye. Effects of Chlorophytum borivilianum on sexual behaviour and sperm count in male rats. Phytotherapy Research 22.6 (2008): 796-801.

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