4Life Transfer Factor Immune Spray combines the immune-boosting power of UltraFactor and NanoFactor extracts with additional ingredients that promote immune system function, including colloidal silver, zinc, and lactoferrin. This easy-to-dispense throat spray also contains soothing aloe vera and marshmallow*
Our in-house Research and Development team includes doctors and scientists who keep 4Life on the cutting edge of scientific advancement. Additionally, our Health Sciences Advisory Board (HSAB) assists in the development of new products and helps further research.
4Life invests millions of dollars on state-of-the-art laboratory equipment and operates one of the most advanced analytical labs in the direct selling industry to test raw materials and finished goods.
4Life manufacturing facilities include cutting-edge packaging, encapsulation, and blending equipment and have received NSF® International Good Manufacturing Practices (GMP) registration.
Prior to distribution, many 4Life products undergo hundreds of tests. Extensive testing ensures the utmost quality throughout a product’s lifecycle.
4Life’s research and pursuit of patent protection demonstrate the company’s long-term commitment to exclusivity and stability. 4Life holds six U.S. patents and 38 international patents—with dozens more pending.
4Life product formulations are developed through research and a commitment to the utmost quality and efficacy. The certified 4Life Transfer Factor® guarantee ensures the identity, purity, strength, and composition of every 4Life Transfer Factor product you take.
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