NutriFeron is a supplement created by Dr. Yasuhiko Kojima that contains 4 oriental herbs to naturally boost interferon production. It has been proven in 4 clinical studies to positively impact immune cells. The formula is based on over 40 years of research and contains plant extracts that have anti-inflammatory and immune boosting properties. NutriFeron works to increase interferon levels and optimize immune response at the cellular level to better defend against health threats.