UltraFactor XF®-A proprietary concentrate of ultra-filtered 4Life Transfer Factor® proteins and other peptides from cow colostrum • OvoFactor®-A patented concentrate of 4Life Transfer Factor® proteins and other peptides from chicken egg yolk • NanoFactor®-A proprietary concentrate of nano-filtered cow colostrum • Saw palmetto (Serenoa repens), lycopene, and kudzu (Pueraria lobata) root extract
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