4Life Transfer Factor Immune Boost powers up your immune system cells with the highest dose of 4Life Transfer Factor® in any 4Life product (1,000 mg). Take Transfer Factor Immune Boost any time you want a powerful immune system boost, especially in times of mental and physical stress when you don’t have time to feel anything but your best.* *These statements have not been evaluated by the food and drug administration. these products are not intended to diagnose, treat, cure, or prevent any disea