The Beljanski® Products are research-driven, scientifically formulated natural supplements developed by Mirko Beljanski, PhD.

The Beljanski® Products include natural extracts of the South American plant Pao pereira, the African shrub Rauwolfia vomitoria, a unique extract of golden leaf Ginkgo biloba (which has different properties from the standard green leaf extracts on the market), and a preparation of short RNA fragments, and a house blend of green teas selected by Mirko Beljanski himself.


Mirko Beljanski’s research on Pao pereira

Pao pereira is a tree native to the Amazon rainforest. Dr. Mirko Beljanski was among the first to formally research the benefits of Flavopereirine, the active ingredient in Pao pereira bark, at the Pasteur Institute (France).1,2,3,4
Mirko Beljanski, PhD investigated Pao pereira for over 40 years and published many articles on the activity of this extract that he called PB100.5,6,7,8,9,10,11
Beljanski’s Pao pereira extract helps support the body’s own immune and detoxification systems to eliminate or neutralize undesirable cells.12*

Natural Source International and Pao pereira Products

Natural Source carefully selects its raw materials to guarantee a high and standardized level of active important key ingredients. We are the only company extracting Pao pereira according to Dr. Mirko Beljanski’s proprietary method. Our capsules are 100% vegetarian. Pao pereira extract is available in Pao V®, Pao V ”FM”®, Prostabel®


Mirko Beljanski’s research on Rauwolfia vomitoria

Rauwolfia vomitoria is extracted from the bark of the roots of Rauwolfia vomitoria, an African tree. Mirko Beljanski noted that once reserpine was removed from the Rauwolfia vomitoria extract, the extract had very low toxicity and no effect on hypertension. Instead, Beljanski focused on a secondary alkaloid present in Rauwolfia vomitoria: alstonine, which was isolated in 1952 and studied since.13

Mirko Beljanski was able to perfect a Rauwolfia vomitoria extract standardized in alstonine, but devoid of reserpine. Mirko Beljanski’s Rauwolfia vomitoria extract has a protective effect on cells, promoting healthy cellular regulation, particularly when the hormonal system is challenged.14*

Natural Source International and Rauwolfia vomitoria Products

Natural Source’s Rauwolfia vomitoria extract goes through an extensive purification process to remove its reserpine content, thus eliminating any concern of toxicity.

Natural Source guarantees high and standardized level of alstonine, the active compound in its Rauwolfia vomitoria Products. Our capsules are 100% vegetarian. Rauwolfia Vomitoria extract is available in Rovol V®, Prostabel®


Mirko Beljanski’s research on golden Ginkgo biloba

Mirko Beljanski’s Ginkgo biloba extract, which comes from special golden leaves of the gingko tree, is prepared according to stringent extraction methods that provide a unique profile of active plant compounds different from those currently found in any other commercial standardized ginkgo extract. 
Beljanski’s golden leaf extract of Ginkgo biloba enhances the natural cell repair process and helps the tissues to remain healthy through its regulatory or normalizing effect on cellular enzymes.15*

Natural Source International and golden Ginkgo biloba Products

Our Ginkgo biloba extract is made exclusively of golden leaf Ginkgo biloba and extracted through an exclusive, patented process.16 Our capsules are 100% vegetarian. Golden Leaf of Ginkgo Biloba extract is available in Ginkgo V®.


Mirko Beljanski’s research on RNA fragments

As a biochemist, Mirko Beljanski knew that in order to duplicate, any cell needs specific “primers” to catalyze the process of cell duplication.

Mirko Beljanski prepared short fragments of RNA primers according to the model of what the healthy body provides for normal cell multiplication in a selective and specific manner.17*

Natural Source International and RNA Fragments Products

Natural Source RNA fragments support the body’s immune system to help boost the cells which naturally enhance the generation of white blood cells and platelets.18*

Our clinically studied RNA fragments are made from Escherichia coli K-12, an innocuous strain recognized by the National Institute of Health.19 Our capsules are 100% vegetarian. RNA fragments are available in Realbuild®.



At the end of a prolific research project in China, Dr. Beljanski was presented with a large box filled with many of China’s finest teas known for their interesting health properties.

Dr. Beljanski subjected each sample to a special test to reveal their ability to naturally support the body’s immune system. He recorded the positive results and filed them.


Years later, after Dr. Beljanski’s passing we discovered his list. We searched for the organic source of each of those teas and created our proprietary blend for “OnkoTea®”.

Now you can enjoy this aromatic and flavorful tea every day while also supporting your body’s defense system. OnkoTea® is a Beljanski® Product and part of the “Beljanski® Approach to Wellness.”

OnkoTea® is available in 3 different varieties: Wellness (Lemon Essence), Serenity (Lemon Ginger), Radiance (Mango Peach). All the ingredients of OnkoTea® have been carefully selected for their beneficial properties and are USDA organic certified.

* 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.

  1. FlavopereirineLBased Pharmaceutical Composition For Treatment Of HIV Infection. Beljanski, M. WO9402146 A1, February 3, 1994.
  2. The Plant Extract Of Pao Pereira Potentiates Carboplatin Effects Against Ovarian Cancer. Yu J, Chen Q. Pharm Biol. 2014 Jan;52(1):36L43. doi: 10.3109/13880209.2013.808232. Epub 2013 Sept 13. 
  3. U.S. Food and Drug Administration Retrieved form:
  4. Tolerance and Feasibility of a 12LMonth Therapy Using the Antiretroviral Agent PB 100 in AIDSL Related. D. Complex Patients D. Donadio, et al. Dtsch. Zschr. Onkol. 26(6) :145L149, 1994.
  5. M. BELJANSKI, S. CROCHET, M.S. BELJANSKI, “PB100: A Potent and Selective Inhibitor of Human BCNU Resistant Glioblastoma Cell Multiplication“. Anticancer Research, vol.13, n°6A, Nov. Dec. 1993, pp. 2301-2308.
  6. M. BELJANSKI, S. CROCHET, “The selective anticancer agent PB-100 inhibits interleukin-6 induced enhancement of glioblastoma cell proliferation in vitro“. International Journal of Oncology, 5:873-879, 1994
  7. M. BELJANSKI, S. CROCHET, ”Selective inhibitor (PB-100) of human glioblastoma cell multiplication“. Journal of Neuro-Oncology, Vol. 21, N°1, p. 62, 1994.
  8. M. BELJANSKI, S. CROCHET, “The anticancer agent PB-100 concentrates in the nucleus and nucleoli of human glioblastoma cells but does not enter normal astrocytes“. International Journal of Oncology 7:81-85, 1995.
  9. M. BELJANSKI, S. CROCHET, “The selective anticancer agents PB-100 and BG-8 are active against human melanoma cells, but do not affect non malignant fibroblasts“. International Journal of Oncology 8:1143-1148, 1996.
  10. M. BELJANSKI, S. CROCHET, “Mitogenic Effect of Several Interleukins, Neuromediators and Hormones on Human Glioblastoma Cells, and its Inhibition by the Selective Anticancer Agent PB-100“. Deutsche Zeitschrift für Onkologie, 28, 1, 1996, pp. 14-22.
  11. M. BELJANSKI (posthume), “The anticancer Agent PB-100, Selectively Active on Malignant Cells, Inhibits Multiplication of Sixteen Malignant Cell Lines, even Multidrug Resistant“. Genetics and Molecular Biology 2000, vol 23 nº1, pp. 29.
  12. V. MUNOZ, M. SAUVAIN, G. BOURDY, J CALLAPA, et al. “A Search For Natural Bioactive Compounds In Bolivia Through A Multidisciplinary Approach.” Journal of Ethnopharmacology, 2000;69(2):127-137.
  13. M. BELJANSKI: “Oncotest: dépistage des potentiels cancérogènes et spécifiquement anti-cancéreux. Conceptions et perspectives nouvelles en cancérologie“. Environnement et nouvelle médecine. n°2, 1982, pp. 18-23.
  14. JEAN BERHAUT, “Flore illustrée du Sénégal.” Dakar, 1971, pp. 420-421. 
  15. J.E. CAUSSE, T. NAWROCKI, M. BELJANSKI, "Human Skin Fibrosis RNase Search for a Biological Inhibitor-Regulator". Deutsche Zeitschrift für Onkologie, 26, 5, 1994, pp. 137-139.
  16. U.S. Patent No. 5413787
  17. M. BELJANSKI, “Overview: BLRs as Inducers of In Vivo Leucocyte and Platelet Genesis.” Deutsche Zeitschrift für Onkologie, 24, 2, 1992, pp. 41-46.
  18. Dose Escalation Study of an Antithrombacytopenic Agent in Patients with Chemotherapy Induced Thrombocytopenia” by Robert D Levin, MaryAnn Daehler, James F Grutsch, John L Hall, Digant Gupta, Christopher G Lis. Levin - Online magazine Bio Med Central BMC Cancer 10:565 – 2010.
  19. Minshew BH, Jorgensen J, Swanstrum M, Grootes-Reuvecamp GA, Falkow S. Some characteristics of Escherichia coli strains isolated from extraintestinal infections of humans. J Infect Dis. 1978 May;137(5):648-54.