AgePro extends lifespan and improves health span!*

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.*

Preferred Customers Save Big

  • Satisfaction Guarantee – 30-day money-back guarantee
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