The Immune System Company^®

Leading the way in immune system science for more than 25 years*

Science you can trust

Help your body recognize, respond to, and remember potential health threats with 4Life Transfer Factor^®: an immune system memory molecule that is clinically proven to activate the immune system within two hours!^*1

Check out 4Life peer-reviewed, in-house, and 3rd-party studies, research and patents!

What are transfer factors?

Explore 4Life Science-Backed Products by Brand

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.

                
Transfer Factor Immune Support
Colostrum-based immune system support*

Targeted Transfer Factor®
Focused support for your body's needs*

4LifeTransform®
Build muscle, manage your weight, or increase vitality*

4Life Blog

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Press Releases

24-01-2025

Quality, Purity, Identity Testing

15-01-2025

American Association of Immunologists

10-01-2025

Symposium: Latin America

09-12-2024

4Life Wins Protein Innovation Award

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The Immune System Company®