4Life Transfer Factor® Core Products

Leading the way in immune system science*

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About 4Life Transfer Factor

When you have a smart and vigilant immune system, you can fight back against the threats you face every day and live your best life possible. That’s why millions of people around the world have chosen to support their immune systems with 4Life Transfer Factor products!*

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Science of 4Life Transfer Factor

In 1998, 4Life Founder & Chairman of the Board David Lisonbee uncovered research about transfer factors and their benefits for the immune system. First discovered in 1949 by Dr. H. Sherwood Lawrence, transfer factors help immune cells quickly identify potential health threats, speed up the immune system’s response, and help the immune system remember the makeup of specific threats to handle them more quickly in the future.* 4Life® obtains transfer factors from cow colostrum and chicken egg yolks using patented and exclusive processes.

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4Life Transfer Factor® products help your immune system recognize, respond to, and remember potential health threats.*
How Do Transfer Factors Work?
4Life Products—Quality You Can Trust


4Life Transfer Factor® RioVida® Tri-Factor® Formula is the only liquid dietary supplement in the world that combines the immune system benefits of 4Life Transfer Factor with antioxidant-rich superfruits like açaí, pomegranate, blueberry, elderberry, and grape. This intense concentration of active ingredients provides education that support’s the body’s ability to maintain everyday health and energy.*



RiteStart products contain essential vitamin and mineral building blocks for good nutrition plus 4Life Transfer Factor®. These products provide immune system support, essential vitamins and minerals, support for strong bones and muscles, antioxidants, vision and eye health, and more. Named for the exact purpose they provide—a right start for your day, for your health, and for your life—RiteStart products help you look and feel great.*


4Life Transfer Factor Classic Powder Formula

Support your immune system with 4Life Transfer Factor Classic in a convenient powder canister. This powder with a mild cream flavor can be added to any beverage or food.

4Life Transfer Factor Classic Powder Formula educates your immune system with UltraFactor from cow colostrum. Plus, it’s safe for ages 4 and up!*

Recent independent laboratory studies show that 4Life Transfer Factor Classic bolsters Natural Killer (NK) cell activity in the presence of a health threat.*†


Certified 4Life Transfer Factor® Guarantee

At 4Life, we’ve made a commitment to uphold the highest standards of product quality. We certify all 4Life Transfer Factor products and will always strive to create products of the utmost quality and efficacy. We pledge to uphold the product design and manufacturing for every product we sell. When you purchase 4Life Transfer Factor products, you can rest assured that you’re getting the very best. In fact, we guarantee it. Click here to view the 4Life Transfer Factor guarantee.

A. Andersen, P. Vieira-Brock, B. Vaughan, D. Vollmer Method development for the analysis of PBMC-mediated killing of K562 cells by bovine colostrum Journal of Immunological Methods Volume 499, December 2021.