The Immune system Company


Since 1998, 4Life Research® has brought you the best quality products available 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.*

4Life product formulations are developed through research and a commitment to the utmost quality and efficacy. The Certified 4Life Transfer Factor® guarantee ensures the identity, purity, strength, and composition of every 4Life Transfer Factor product that you consume.

The company’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) assists in the development of new products and helps further research into 4Life Transfer Factor Science.

Products for Your Life

When you feel healthy, you can live your best possible life. To do this, you need a vigilant immune system. That’s why people are making the smart choice with 4Life Transfer Factor products.

The Science of 4Life Transfer Factor

4Life Transfer Factor Science encompasses the research, technology, and innovation of products that educate your immune cells, supporting your immune system’s ability to recognize, respond to, and remember potential threats. 4Life Transfer Factor products are patented, certified, and highly researched. 4Life Transfer Factor is sourced in three proprietary ways to provide a wide range of personal immune system support:

UltraFactor XF® is a proprietary concentrate of ultra-filtered 4Life Transfer Factor proteins and other peptides from cow colostrum.

OvoFactor® is a patent-protected concentration of 4Life Transfer Factor proteins and other peptides from chicken egg yolk.

NanoFactor® is a proprietary concentration of nano-filtered cow colostrum.

Product Development

4Life offers numerous delivery methods, including capsules, chewable tablets, juice beverages, powders, and topical 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 on 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 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 manufactures with certified well established companies as per the formulation/blends from 4Life US and oversees each step of the manufacturing process. This includes, but is not limited to, batching, blending, encapsulating, and packaging.


The identity of each ingredient is tested and verified prior to use.


Each raw material and finished product is tested to ensure it is free of contaminants and other adulterants.


Every ingredient goes through a strict list of strength and potency testing to ensure specifications are met.


Each batch is manufactured according to the product specification guidelines and formulation.

To learn even more about the 4Life manufacturing and quality process, watch the Taking Transfer Factor to the World video.


4Life Research establishes product efficacy through collaborations with academic institutions, scientific publications, and exploratory research.

4Life has also partnered with the University of Missouri to conduct a fully-randomized, placebo-controlled, 30-day efficacy study on the effectiveness of Renuvo®.

The 4Life Research and Development team is committed to creating products that offer superior support for overall wellness through continued scientific exploration, while maintaining the highest standards of quality and testing.


4Life Patents

4Life's research and pursuit of patent protection demonstrate 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


Research is in our name and is reinforced through our commitment to innovation, substantiation, and education. The results of this research have appeared in numerous publications and journals, including: Nutrition & Metabolism; Applied Physiology, Nutrition, and Metabolism; Journal of the International Society of Sports Nutrition; and Medicine & Science in Sports & Exercise.

Numerous studies have shown the effectiveness of 4Life Transfer Factor in supporting health.

Science Team

Expert research equals scientific success

Our in-house research and development team is comprised of immune science experts and PhD recipients working hard to keep 4Life on the cutting edge. 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

“The 4Life Research and Development team is committed to creating excellent products of the highest quality for 4Life distributors and customers. Scientific credibility is at the core of what we do.”

Dr. Vollmer has enjoyed over 25 years of experience in product innovation, quality control, and laboratory management. His expertise includes technical and administrative leadership, development and validation studies for new products, laboratory and production specifications, and collaborative scientific affairs. He received his PhD in Analytical Chemistry from the University of Nebraska and his Bachelor of Science degree in Chemistry from Missouri Western State University. Throughout his career, Dr. Vollmer has authored numerous published articles, and is the co-inventor on various patents involving the discovery of pharmaceutical drugs as well as natural products for use in dietary supplements.

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Brent Vaughan, PhD, RD

Vice President of Research and Development

“4Life Transfer Factor products work together to provide some of the best immune system support currently available. Strength, focus, and coordination all in one place give your immune system its best chance for maintaining health and wellness.”*

Dr. Vaughan is a registered dietitian with over 20 years of experience in formulations and research within the dietary supplement industry. He holds a Master’s degree in Food Science and Nutrition from the University of Utah and a doctorate in Public Health and Epidemiology from Walden University in Minneapolis, Minnesota. Dr. Vaughan has been a Formulator and Researcher at 4Life for the past 17 years. During this time, he has been instrumental in the development process for many top-selling 4Life products and has worked with distributors throughout the world.

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Paula Brock, PhD, MSCI

Director of Scientific and Regulatory Affairs

“4Life provides the opportunity for people to live successful lives. Through science and service, we aim to deliver safe and efficacious products and education to assist in improving both physical and mental health and to help people achieve a positive lifestyle.”

Dr. Brock has 18 years of experience in neuroscience and pharmacology. Her expertise includes teaching and mentoring, mechanism of action, safety and toxicity of biological compounds, analytical pharmacology, molecular biology, and personalized medicine. She received her Bachelor of Science degree in Chemistry, Master of Science degree in Clinical Investigation and PhD in Pharmacology and Toxicology from the University of Utah. Prior to living in the United States, Dr. Brock attended the College of Pharmacy in Brazil. She has contributed to numerous scientific publications, presentations, and lectures. Dr. Brock has received awards from the Howard Hughes Medical Institute, the American Foundation for Pharmaceutical Education, the American Society for Pharmacology and Experimental Therapeutics, and several others.

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Health Sciences Advisory Board

Robert Robertson

Robert W. Robertson, Jr., MD

“4Life Research is well-known in the nutraceutical industry as the leader in transfer factor research. If new discoveries are made, one can rest assured that the scientists at 4Life will be at the forefront.”

Dr. Robertson is one of the founding members of the Health Sciences Advisory Board and an active 4Life distributor. Following a lucrative career as the Director of Emergency Services at Western Baptist Hospital in Paducah, Kentucky, Dr. Robertson and his son Rob Robertson, III decided to start a nutritional supplement company. It was while conducting product research for their company that the two discovered the many benefits of transfer factors. Convinced of the importance of 4Life’s mission, they sold their company and became distributors. Dr. Robertson completed his education at the University of Louisville School of Medicine and worked as an intern at the University’s affiliated hospitals. He completed his residency in emergency medicine at the University of Louisville affiliated hospitals.

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Teresa Tomalska

Teresa Tomalska, MD

“It seldom happens that one scientific discovery can bring such huge benefits to support the health of every human being. I firmly believe that 4Life Transfer Factor products hold the secret to optimal immune system function.”*

Dr. Tomalska completed her medical training at the Medical Academy of Lublin in Poland. She came to the United States several years ago, intending to only stay for a short visit. Right before leaving, she was introduced to 4Life. Dr. Tomalska decided to stay and devote herself full-time to teaching people about supporting good health. In an effort to further this cause, Dr. Tomalska currently hosts two informative radio shows called “Balsam” and “Toward Health” in Chicago, Illinois, and publishes a monthly newsletter entitled “To Your Health.” She also organizes seminars on topics such as women’s health, cardiovascular health, and health for Polish families.

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Said Daibes

Elena Enioutina, MD, PhD

“As a trained pharmacologist, I have very high standards when it comes to herbal products. 4Life products drew my attention, and I was amazed by these balanced, well-thought-out products. I use 4Life Transfer Factor® products to support my immune system.”*

Dr. Enioutina graduated from the Sechenov Moscow Medical Academy with a medical degree in preventive medicine and epidemiology. She was also awarded a doctorate degree in pharmacology/toxicology from the All-Union Institute of Medicinal Plants in Moscow. Dr. Enioutina’s dissertation focused on the effects of herbal cholesterol-lowering drugs on the immune system and corrections of these adverse reactions by multivitamin complexes. She has published a series of articles describing the use and regulation of herbal products. Over the last two decades, she has investigated the molecular mechanisms of immune responses following vaccination. Currently, Dr. Enioutina is a faculty member of the University of Utah Division of Pediatric Clinical Pharmacology. She devotes her free time to education and translational research.

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MeiLing SiuCaldera

Mei-Ling Siu-Caldera, MD, PhD

“Good nutrition is the foundation for physical and mental wellness.”

Dr. Siu-Caldera is a medical doctor who has done extensive research on the benefits of vitamin D in cancer treatment. She provides nutrition counseling with a focus on weight management, dietary and lifestyle modification, cardiovascular health, and sports nutrition. Dr. Siu-Caldera graduated from the University of San Carlos in Guatemala and received her PhD in Nutrition from the University of Connecticut, Storrs. She has published more than 20 peer-reviewed research papers and contributed articles in newspapers and magazines to increase public awareness on nutrition health.

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Ty Hopkins

J. Ty Hopkins, PhD, ATC

“4Life is committed to scientifically vetting the development of their products, as well as using only high quality ingredients and maintaining the highest quality control. In an industry where most companies are not committed to this type of quality, 4Life stands out. As a scientist and an athlete, I am happy to recommend 4Life products to those who would like to supplement their healthy lifestyle and strengthen immune function.”

Ty Hopkins is currently a professor at Brigham Young University, where he coordinates the graduate programs in athletic training and physical medicine and rehabilitation. Dr. Hopkins graduated from Brigham Young University with a BS in Athletic Training. His graduate work was completed at Indiana State University where he earned an MS in Athletic Training and a PhD in Life Sciences.

The focus of Dr. Hopkins’ research centers on joint health: prevention and rehabilitation of lower extremity joint injury. He has produced over 70 peer review publications and he has presented his work nationally and internationally hundreds of times. He enjoys working with students in the laboratory and regularly uses his work from the laboratory in the classroom.

Dr. Hopkins serves as an editor for the Journal of Athletic Training, and he serves on editorial boards and as a reviewer with many other journals and granting agencies. He is also a Fellow with the National Athletic Trainers’ Association and the American College of Sports Medicine.

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Joy Irobi, PhD

Joy Irobi, PhD

“4Life Transfer Factor® serves to teach our immune system to efficiently support us as we face daily life stressors. I find it exciting to join the team of scientists who will develop the next generation 4Life immune system products to support healthy aging and other concerns.”*

Dr. Irobi earned her doctorate in the field of molecular genetics, and spent 17 years as the lead researcher for the internationally renowned University of Antwerp’s Department of Molecular Genetics. Currently, she is a research professor of medicine and life sciences in the Biomedical Research Institute (BIOMED) at Hasselt University in Belgium. Dr. Irobi’s group at Hasselt University focuses on deciphering the neuroprotective biomarkers in exosome or extracellular vesicle signaling in neuro-inflammation. Irobi has produced more than 30 publications and has won numerous awards for her contributions to the field of biomedical sciences.

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Don Otter, PhD

Don Otter, PhD

“The reputation of an international supplement manufacturer is reliant upon the integrity of products, the caliber of manufacturing, the science behind formulas and, of course, research to substantiate innovation. 4Life has been a world leader for more than two decades. I’m confident that there are decades of 4Life advancements to come.”

Dr. Otter completed his doctorate degree in chemical and materials engineering at The University of Auckland in 1987. For the past 30 years, he’s developed a reputation as an innovative, interdisciplinary dairy product scientist and professor. Prior to his position as Associate Professor in the Food Science Department at the Auckland University of Technology, he served as a Senior Outreach Specialist at the Center for Dairy Research, University of Wisconsin-Madison, a Senior Research Scientist for a food and bio-based products company, and visiting scientist at North Carolina State University in Raleigh, NC.

Dr. Otter’s professional distinctions include sitting on the Editorial Board of the International Dairy Journal and participating in the Executive Committee for the New Zealand Institute of Food Science and Technology.

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