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

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.*

4Life Transfer Factor Immune Support*
Colostrum-based immune system support*

Digest4Life
Gut health and immune system support*

4LifeTransform
Build muscle, manage your weight, and increase vitality*

RioVida
Antioxidant superfruits powered by 4Life Transfer Factor*

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

4LifeElements
Unique mineral-based solutions from our earth, for your life

RiteStart
All-in-one daily supplement pack*

äKwä
Flawless, ageless, and effortless skincare