Is there specific scientific proof of the effectiveness of 4Life Transfer Factor products?
Yes. Studies conducted by the Russian Academy of Medical Science show that 4Life Transfer Factor Advanced Formula boosts immune activity by 283 percent* and 4Life Transfer Factor Plus Advanced Formula boosts it 437 percent*! The study compared 4Life Transfer Factor products to individual herbs and ingredients known to improve immune response such as noni, dry cow colostrum, echinacea and others. An earlier study showed that 4Life Transfer Factor Classic boosted NK cell activity 103 percent.