Magnum E-Brake: Putting the Brakes on Aromatase!

Magnum E-Brake

E-Brake is Magnum’s aromatase inhibitor which puts the brakes on this dastardly enzyme robbing you of your much beloved testosterone.

As the calendar turns to football season, there is a noticeable surge in testosterone around the country. However, that surge isn’t nearly what it should be due to the actions of a rather notorious enzyme, aromatase. This malcontent is responsible for taking your testosterone and turning it into too much dreaded estrogen.

Luckily, our friends at Magnum Nutraceuticals have you covered in more ways than one. Not only do they have an extremely powerful natural testosterone booster in THRUST, they have now formulated a product to stop aromatase in its tracks with E-Brake.

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E-Brake Ingredients

Magnum Nutraceuticals E-Brake Ingredients

E-Brake is transparentally dosed so you know just how much of estrogen fighting action you get in each dose.

Magnum employs a 100% transparent label on their new aromatase inhibitor (AI) supplement that promises to increase libido, muscle mass, recovery, while keeping estrogen levels in check. Let’s see what their packing!

  • Brassaiopsis Glomerulata (500mg)

    Estrogen production in the body occurs when the aromatase enzyme effectively “destroys” testosterone, for all intents and purposes, and converts it to estrogen.[13] Now, to preserve our testosterone levels, it only makes sense that we get right to the source stopping this conversion. It just so happens that E-Break’s first ingredient is a powerful inhibitor of the aromatase enzyme!

    Brassaiopsis Glomerulata is a tree that traditionally grows in Vietnam that contains two compounds, Dehydrololiolide and N-Benzoyl-L-phenylalanine, which have shown to act as potent aromatase inhibitors.[1]

  • Acacetin (100mg)

    One ingredient does not a supplement make though, and Acacetin is E-Brake’s back up vocalist. While having one aromatase inhibitor may be sufficient for other company’s products, Magnum included acacetin to provide an extra layer of protection against aromatase actions in the body.

    In a study analyzing 24 different compounds for their potency in inhibiting the pro-estrogenic enzyme, acacetin was one of two compounds (pinocembrin being the other) that proved most effective in combating aromatase activity.[2] There’s also been research indicating that the same compounds can lead to increased libido and sexual function.[3]

  • Hesperidin (100mg)

    Hesperidin is one of the many flavonoids found in the peels of citrus plants. It’s one tricky animal though, as it can have a duel estrogen effect on the body. Low doses of hesperidin exert pro-estrogen effects; however, high doses exhibit anti-estrogen effects, like aromatase inhibition.[4,5,6]

    As we saw with Magnum’s heralded test booster, THRUST, they include a high enough dose to take advantage of hesperidin’s anti-estrogen effects.

  • Pygeum Bark (100mg)

    Magnum Nutraceuticals E-Brake Benefits

    E-Brake not only inhibits aromatase activity, but also increases libido, muscle mass gains, and recovery!

    Pygeum Bark extract comes from the Prunus africanum tree, a.k.a the African cherry tree. The bark has a long history of use in African medicine for supporting prostate health. Recent research shows it’s capable of displacing about 60% of Dihydrotestosterone (DHT) from its receptors.[7]

    DHT is yet another sex hormone and androgen in the body. Roughly 5% of the testosterone in your body converts to DHT. Why would we want this inhibited though?

    DHT is the main culprit in male pattern baldness. Plus, any compound that robs us of our testosterone creates an avenue for additional testosterone, provided this conversion can be slowed down or stopped entirely. Thus, it stands to reason that we’d want to stop this process and prevent the spread of DHT in our systems, lest we all end that much weaker and losing that much more hair!

  • Stinging Nettle Leaf 4:1 Extract (90mg)

    The Stinging Nettle plant contains a class of compounds called lignans that can interfere with Sex Hormone Binding Globulin (SHBG). This action prevents SHBG from absorbing the precious testosterone in your body.[8]

    Yet again, we have another potent ingredient that while not directly boosting your testosterone levels, it will indirectly increase it by preventing testosterone from being absorbed by SHBG. A final benefit of Stinging Nettle is that it’s 5a-reductase inhibitor, which prevents the conversion of testosterone to DHT.[9]

  • Vitamin D3 (400IU)

    Vitamin D3 is a fat-soluble vitamin that plays a vital role in hormone production in the body. It also happens to be one the biggest nutritional deficiencies in the population.[10] Magnum included it to help remedy this deficiency as well as improve your testosterone levels.

    In a cross-sectional study looking at the correlation between androgens and Vitamin D levels, the researchers found that higher levels of the vitamin also resulted in higher levels of testosterone and lower SHBG![11]

  • Piperine Extract (5mg)

    To make sure that your body is maximizing its absorption of the AI compounds in E-Brake and thus preserving your precious testosterone, Magnum has included black pepper extract. This ingredient is added to loads of supplements nowadays for its ability to increase the body’s absorption of the active ingredients and prevent their premature breakdown.[12]


To halt estrogen in its tracks and keep that anabolic engine churning all through the night, take 3 capsules approximately 30 minutes before bed.

Magnum Nutraceuticals Product Preview

Magnum just released E-Brake and they’re already teasing a new supplement for October…what could it be?!


When E-Brake was first previewed on the box of Limitless, we’ve been eagerly awaiting its release. Now that September is upon us, the product should be hitting the shelves any week now. If you’re getting on in years and worried your T levels may be dropping, or you want to simply increase your anabolic potential, stopping aromatase and estrogen is a must.

We’re rapidly coming to the conclusion that THRUST, although expensive, is one of the best (if not the best) natural testosterone boosters on the market, thanks to its massive and potent profile.

Well the powerful THRUST finally has a worthy counterpart in E-Brake, which provides the means to the end you’re looking for and allows you to put the “brake” on aromatase!

Magnum Nutraceuticals E-Brake – Deals and Price Drop Alerts

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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.

Magnum Nutraceuticals E-Brake Ingredients

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About the Author: Mike Roberto

Mike Roberto

Mike Roberto is a research scientist and water sports athlete who founded PricePlow. He is an n=1 diet experimenter with extensive experience in supplementation and dietary modification, whose personal expertise stems from several experiments done on himself while sharing lab tests.

Mike's goal is to bridge the gap between nutritional research scientists and non-academics who seek to better their health in a system that has catastrophically failed the public.

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  1. Balunas MJ, et al; Isolation and Characterization of Aromatase Inhibitors from Brassaiopsis glomerulata (Araliaceae). Phytochem Lett. (2009)
  2. Jianping Zhaoa, Asok K. Dasmahapatra. Anti-aromatase activity of the constituents from damiana (Turnera diffusa). Journal of Ethnopharmacology 120 (2008)
  5. Liu L, Xu DM, Cheng YY; Distinct effects of naringenin and hesperetin on nitric oxide production from endothelial cells. J Agric Food Chem. (2008)
  6. Jeong HJ, Shin YG, Kim IH, Pezzuto JM. Inhibition of aromatase activity by flavonoids. Arch. Pharm. Res. 1999;22:309.
  7. Shenouda NS, et al; Phytosterol Pygeum africanum regulates prostate cancer in vitro and in vivo. Endocrine. (2007)
  8. Gansser D, Spiteller G; Plant constituents interfering with human sex hormone-binding globulin. Evaluation of a test method and its application to Urtica dioica root extracts. Z Naturforsch C. (1995)
  9. Nahata A, Dixit VK; Ameliorative effects of stinging nettle (Urtica dioica) on testosterone-induced prostatic hyperplasia in rats. Andrologia. (2012)
  10. Brock K, et al; Low vitamin D status is associated with physical inactivity, obesity and low vitamin D intake in a large US sample of healthy middle-aged men and women . J Steroid Biochem Mol Biol. (2010)
  11. Wehr E, et al; Association of vitamin D status with serum androgen levels in men. Clin Endocrinol (Oxf). (2010)
  12. Han HK; The effects of black pepper on the intestinal absorption and hepatic metabolism of drugs. Expert Opin Drug Metab Toxicol. (2011)

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