4Life Transfer Factor® Classic
4Life’s original immune system support supplement*
4Life’s original colostrum-based transfer factor product for daily immune system support
Primary Support: Immune, Wellness Secondary Support: Cardiovascular, Energy
* Educates the immune system with Transfer Factor XF®
* Increases Natural Killer (NK) cell activity 204% above normal response
* Provides safe and effective support
4Life Transfer Factor Classic has been recognized for years as the best colostrum-based transfer factor product for daily immune system support. It contains our original Transfer Factor XF® ingredient for safe and proven immune system support.