Since 1998, 4Life Research® has brought you high-quality products to support your immune system and overall health. We are committed to ongoing innovation and scientific discovery, with products to help you lead a healthy life.*

Research and Development

We develop 4Life products through research and a commitment to the utmost quality and efficacy. The certified 4Life Transfer Factor® ensures the identity, purity, strength, and composition of every 4Life Transfer Factor product.

4Life's in-house Research and Development team includes doctors and scientists who keep 4Life on the cutting edge of scientific advancement. Additionally, our Health Sciences Advisory Board (HSAB) helps develop new products and furthers research into 4Life Transfer Factor Science.

Explore 4Life Science-Backed Products by Brand

Your immune system is related to every other system in your body. That's why people are making the smart choice with 4Life Transfer Factor® products.*

Quality and Labs

Prior to distribution, many 4Life products undergo hundreds of tests. Extensive testing ensures the utmost quality throughout a product's lifecycle. 4Life invests millions of dollars in state-of-the-art laboratory equipment and operates one of the most advanced analytical labs in the direct selling industry to test raw materials and finished goods.

4Life manufacturing facilities include cutting-edge packaging, encapsulation, and blending equipment and have received National Sanitation Foundation (NSF®) International Good Manufacturing Practices (GMP) registration. Earning GMP Registration from NSF International verifies that 4Life employs proper methods, equipment, and controls in producing the highest quality dietary supplement products.


4Life runs its own manufacturing facility and oversees each step of the manufacturing process. This includes, but is not limited to, batching, blending, encapsulating, and packaging.

To learn even more about the 4Life manufacturing and quality process, watch the "Making Transfer Factor for the World" video.


4Life's research and pursuit of patent protection demonstrates the company’s long-term commitment to exclusivity and stability. 4Life holds six U.S. patents and 38 international patents—with dozens more pending.

Studies and Publications

4Life products are backed by peer-reviewed publications, patents, in-house white papers reporting on studies done by 4Life or third-party collaborations, and monographs that include extensive literature reviews for ingredient safety and efficacy. These studies are also cited in the Prescribers’ Digital Reference.

Science Team

Our in-house Research and Development team is comprised of immune system science experts and PhD recipients working hard to keep 4Life on the cutting edge. of scientific innovation. We’ve also enlisted the expertise of dozens of physicians and nutrition experts worldwide, all members of the Health Sciences Advisory Board.

David Vollmer, PhD

Chief Scientific Officer

Brent Vaughan, PhD, RD

Vice President of Research and Development

Alice Hirchel, PhD

Director of Scientific and Regulatory Affairs

Health Sciences Advisory Board

Teresa Tomalska, MD

Mei-Ling Siu-Caldera, MD, PhD

J. Ty Hopkins, PhD, ATC

Joy Irobi, PhD

Elena Enioutina, MD, PhD

Lili Yang, MD, PhD

Em Capito, LCSW, MBA, E-RYT