Supplement analysis backed by scientific evidence · PT

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Limited evidencePhysical performance

Suma (Brazilian Ginseng)

Sold as a 'Russian secret' anabolic because it contains ecdysteroids, but a typical 500 mg capsule delivers only a few milligrams of them — far below the doses used in the one human ecdysterone trial. No human study of suma root itself has ever been published.

What the science says

  • Builds muscle via ecdysteroids Limited evidence

    The anabolic story rests entirely on 20-hydroxyecdysone (beta-ecdysone) content. Pfaffia roots contain roughly 0.3-2% ecdysteroids depending on species and growing conditions, so a 500 mg capsule delivers about 1.5-10 mg — while the widely cited positive human ecdysterone trial used around 800 mg per day of the isolated compound. Matching that from root powder would require tens of grams daily. Whatever you think of the ecdysterone evidence, suma capsules do not deliver a comparable dose.

  • Acts as an adaptogen for energy, stress, and libido Limited evidence

    A comprehensive 2024 review of Pfaffia glomerata botany, ethnopharmacology, and pharmacology catalogues traditional use as a tonic and aphrodisiac alongside in vitro and rodent findings — and no human clinical trials. There is no measured effect on cortisol, fatigue scales, mood, or sexual function in people.

  • Contains distinctive triterpene saponins Limited evidence

    Phytochemical work on Pfaffia paniculata has isolated pfaffic acid derivatives and other nortriterpenoid saponins that are genuinely unusual and distinguish suma from Panax ginseng, with which it shares no botanical relationship. Interesting chemistry does not equal a clinical effect, and none of these compounds has been tested in humans.

Dosage & safety

Studied doseNo human-validated dose exists. Labels typically call for 500-1500 mg of powdered root one to three times daily. If you specifically want ecdysteroids, buying a standardized ecdysterone product with a stated milligram content is the honest route — suma root powder is an inefficient and unquantified delivery vehicle. Note also that 'suma' on the market spans at least two species (Pfaffia paniculata and P. glomerata) with different ecdysteroid content.
SafetyNo controlled human safety data exists at any dose. Occupational exposure to the root powder has been linked to respiratory irritation and asthma-like symptoms in handlers, which is a reason to avoid inhaling loose powder when opening capsules. Ecdysteroids and the plant's saponins have been flagged in silico as potential estrogen mimics, so caution is warranted in hormone-sensitive conditions. Ecdysterone itself sits on WADA's Monitoring Program, meaning tested athletes should treat any ecdysteroid-containing product as a compliance risk even though it is not currently prohibited. No pregnancy, lactation, pediatric, or long-term data.

Scientific references

Where to buy

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