Certified 4Life Transfer Factor^® and additional support ingredients to balance and support the immune system response*

Primary Support: Immune System, Overall Wellness

* Educates, enhances, and balances the immune system with the exclusive Tri-Factor Formula
* Boosts natural killer cell activity by up to 473%*¹
* Contains UltraFactor XF^®, OvoFactor^®, and NanoFactor^® extract for the highest amount of 4Life Transfer Factor^® per serving—300 milligrams