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4Life is in the PDR

When physicians want information on the latest and greatest herbs and supplements, they turn to the PDR. And 4Life Transfer Factor® products have been listed in the PDR since 2002.

Physicians’ Desk Reference for Non-prescription Drugs, Dietary Supplements, and Herbs (PDR)

© 2012 4Life Trademarks, LLC

The information on this website is only applicable in the United States.

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