High T Review

High T

High T is KingFisher’s relatively popular test-booster/libido enhancer. In terms of ingredients, it is similar to others we’ve reviewed, with Fenugreek being a key ingredient…


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High T is KingFisher’s relatively popular test-booster/libido enhancer. In terms of ingredients, it is similar to others we’ve reviewed, with Fenugreek being a key ingredient…[Skip to the Bottom Line]


While Fenugreek (as Testofen) has demonstrated the ability to increase Testosterone in one study, it has failed to do so elsewhere under similar conditions. We discuss Fenugreek and its effects on Testosterone in depth in this article.

At this time, the reason for the discrepancy is unknown. So, as a Test-booster, the reliability of Fenugreek should be questioned. Like Tribulus, Fenugreek is an effective libido enhancer and may provide the illusion of increased Testosterone regardless of whether an actual increase occurs.

The exact dose of Fenugreek present in High T is unknown, but we’d estimate there is anywhere from 200-500mg, the high end of which would technically be a clinical dose (though that doesn’t necessarily make it reliable).


Eurycoma Longifolia, also known as Tongkat Ali has been shown, in various studies, to increase Testosterone in male rats, but the only human studies that exist have tested the effects of Tongkat Ali in infertile men, not healthy men.

A 2010 study published in the “Asian Journal of Andrology” found that supplementation with 200mg of an extract of Eurycoma Longifolia significantly improved various indications of male fertility (in humans), though the mechanism of action was unknown.

A 2012 study published in “Andrologia: Volume 44” (the same researchers from the above mentioned human study) found that men suffering from Hypogonadism (diminishing functionality of the gonads) who were treated with a 200 mg daily dose of Eurycoma longifolia extract reached normal Testosterone levels after a 30 day period. To be fair, at the start of the study about 35% of the men were showing normal Testosterone levels, and at the end about 90% showed normal levels. Still, 35% to 90% is clearly statistically significant.

As with the rest of the ingredients in High T, the exact dose of Eurycoma Longifolia is unknown but there is certainly room for an effective (200mg) dose.


Rhodiola Rosea has a long history of use as an adaptogen, meaning it can decrease the body’s sensitivity to stressful situations, physical or mental. Preliminary studies in animals have shown that Rhodiola Rosea produces anabolic effects similar to low dose testosterone treatment.

One human trial, to determine a possible role in erectile dysfunction, found that subjects who consumed 150-200mg Rhodiola Rosea daily for three months experienced heightened sexual function. Whether this was a direct result of increased testosterone is unknown, but given the preliminary support from the animal studies, it is certainly a possibility.

It’s not clear whether High-T contains a particularly effective dose of Rhodiola Rosea, but we don’t see any red flags that would indicate a less-than effective dose.


A 2010 study from “The Journal of Strength & Conditioning Research” found that post-exercise Arginine/Ornithine supplementation had no effect on Testosterone levels, but did increase GH and IGF-1 levels (with levels of these normalizing within one hour).

However, Arginine has also been shown to blunt the exercise-induced GH spike compared to exercise alone in a 2006 study and a 2008 study, both published in the “Journal of Applied Physiology”.

Currently the reason for the discrepancy is unknown, but given that any increase is likely to normalize quickly, Arginine isn’t an effective way maintaining consistently high GH levels.

In the context of High-T, Arginine functions as an N.O. booster, but given that there isn’t really enough room for an effective dose (it takes several grams of Arginine to influence blood flow), we wouldn’t consider it a “key” ingredient.


The High T formula is similar to other Testosterone-boosters we’ve seen, with Fenugreek being the only ingredient that “might” increase Testosterone beyond the normal range. The remaining ingredients may encourage Testosterone levels to remain at the high-end of the normal range, but will not cause a boost beyond that. The claims regarding strength and stamina are also a bit off-base, considering Arginine is the only ingredient shown to do this and it tends to be unreliable. At the very least, however, High-T has what it takes to enhance libido and sexual well-being, creating the illusion of increased Testosterone.


[expand title=”REFERENCES” tag=”h5″]

  1. Collier, S. R., Ellise Collins, and Jill A. Kanaley. “Oral arginine attenuates the growth hormone response to resistance exercise.” Journal of Applied Physiology 101.3 (2006): 848-852.
  2. Kanaley, Jill A. “Growth hormone, arginine and exercise.” Current Opinion in Clinical Nutrition & Metabolic Care 11.1 (2008): 50-54.
  3. Zajac, Adam, et al. “Arginine and ornithine supplementation increases growth hormone and insulin-like growth factor-1 serum levels after heavy-resistance exercise in strength-trained athletes.” The Journal of Strength & Conditioning Research 24.4 (2010): 1082-1090.
  4. Bushey, Brandon, et al. “Fenugreek Extract Supplementation Has No effect on the Hormonal Profile of Resitance-Trained Males.” International Journal of Exercise Science: Conference Proceedings. Vol. 2. No. 1. 2009.
  5. Steels, Elizabeth, Amanda Rao, and Luis Vitetta. “Physiological Aspects of Male Libido Enhanced by Standardized Trigonella foenum‐graecum Extract and Mineral Formulation.” Phytotherapy Research 25.9 (2011): 1294-1300.
  6. Tambi, M. I. B. M., M. K. Imran, and R. R. Henkel. “Standardised water‐soluble extract of Eurycoma longifolia, Tongkat ali, as testosterone booster for managing men with late‐onset hypogonadism?.” Andrologia 44.s1 (2012): 226-230.
  7. Ang, H. H., S. Ikeda, and E. K. Gan. “Evaluation of the potency activity of aphrodisiac in Eurycoma longifolia Jack.” Phytotherapy Research 15.5 (2001): 435-436.
  8. Zanoli, P., et al. “Influence of< i> Eurycoma longifolia on the copulatory activity of sexually sluggish and impotent male rats.” Journal of ethnopharmacology 126.2 (2009): 308-313.
  9. Ang, H. H., S. Ikeda, and E. K. Gan. “Evaluation of the potency activity of aphrodisiac in Eurycoma longifolia Jack.” Phytotherapy Research 15.5 (2001): 435-436.
  10. Tambi, Mohd Ismail Bin Mohd, and M. Kamarul Imran. “Eurycoma longifolia Jack in managing idiopathic male infertility.” Asian journal of andrology 12.3 (2010): 376-380.
  11. Bhat, Rajeev, and A. A. Karim. “Tongkat Ali (< i> Eurycoma longifolia Jack): A review on its ethnobotany and pharmacological importance.”Fitoterapia 81.7 (2010): 669-679.
  12. Eagon, Patricia K., et al. “Evaluation of the medicinal botanical Rhodiola rosea for estrogenicity.” Proceedings of the American Association for Cancer Research 2004.1 (2004): 663.
  13. Khanum, Farhath, Amarinder Singh Bawa, and Brahm Singh. “Rhodiola rosea: a versatile adaptogen.” Comprehensive reviews in food science and food safety 4.3 (2005): 55-62.

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