From 2004 - 2014, in this 10 years. 4Life Transfer Factor Products are listed in the Physician’s Desk Reference (PDR).
What a great news to know the products you consume are not only certified and have good quality. In 2014 PDR, it includes new product labels, especially checking the change of 4Life transfer factor plus and 4life transfer factor tri-factor formulas. Also you can find more products information about 4LIfe product technical description of the product line and synopses of several scientific studies. There are more product details in PDR now.
4Life Research company has 9 world wide patent, and dozen more pending patents. Also a great continuously improving Scientist team to help 4Life products getting better!
Checking the 4Life New looking products and New 4LIfe products since 4Life October conversion. And give yourself some new updates of great 4Life products. or check http://www.transferfactorhealth.com/ for the latest of 4Life Research information.