Located in the heart of Manhattan for over 20 years

Natural Source was founded in 1996 as a New York company, by Sylvie Beljanski, daughter of French microbiologist Mirko Beljanski (1923-1998). Her goal was to ensure the continued availability of her father’s products (The Beljanski® Products), the recognition of his 50 years of scientific research, and to carry on his scientific legacy. The Beljanski® Products are unique dietary supplements that have consistently offered unparalleled hope and comfort to their users all over the world.

Over the years, Natural Source has expanded the original Beljanski® Products line to encompass the concept of holistic health. In 2008, base on her expertise Sylvie Beljanski launched Targetage® a line of supplements supporting the removal of toxins and healthy rejuvenation, and French Secret®, a skincare line designed forextremely sensitive skin. More recently, Natural Source launched Beljanski® Professional, a line of products offering Mirko Beljanski’s extracts at professional strength available only through health care professionals.

A New York love story

Sylvie Beljanski, daughter of Mirko Beljanski, was born in NYC and raised and educated in Paris. Later she return to New York City to found Natural Source International, Ltd. Today the company offers science-based dietary formulas stemming from her father’s life time of research in environmental medicine.



The Beljanski® products offer unique plant extracts (Pao pereira, Rauwolfia vomitoria, Golden leaf Ginkgo biloba) and RNA fragments developed by Mirko Beljanski, PhD. They are exclusively manufactured for Natural Source International, Ltd. according to Dr. Beljanski’s proprietary extraction processes.


Targetage® dietary supplements are made with only the highest quality ingredients possible and use the most potent and complete whole food formulas available. They promote intense detoxification, and provide a superior source of vitamins, minerals, probiotics as well as antioxidant protection, in order to offer healthy rejuvenation.

French Secret®

French Secret® skincare products designed to fulfill the specific needs of the most sensitive, demanding skins, are free of synthetic preservatives and contain luxurious essential oils and other powerful botanicals.

Beljanski® professional

Beljanski® Professional is an exclusive line of innovative dietary supplements only available through Healthcare Professionals.