About Us


Natural Source International, Ltd. (Natural Source) believes in a holistic approach to health and wellness by treating the person as a whole. Drawing on over 40 years of research, Natural Source brings together science and nature to combine the purest, most potent natural ingredients to formulate innovative and luxurious products that are used all over the world.

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.

Over the years, Natural Source has expanded the original Beljanski® Products line to offer natural and exceptional products to fulfill the concept of holistic health. In 2008, on the strength of her expertise Sylvie Beljanski launched Targetage®, a line of high quality dietary supplements (detox, vitamins, minerals, antioxidants, etc.), and French Secret®, a skincare line designed for extremely sensitive skins. More recently, Natural Source launched Beljanski® Professional, a line of products offering Mirko Beljanski’s extracts at professional strengh and available only through health care professionals.


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.

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

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 and minerals, as well as antioxidant protection.

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