Hanan's Immune defense contains the world's most powerful mushrooms. It feature a unique complimentary blend of mushrooms extracts to boost the immune system along with Traditional Chinese Medicine (Astragalus) to help the body adapt to external environmental changes better. This is the ultimate boost of the immune system to help fight off colds/ flus/ cancers etc. effectively. This formula has been tested and proved to increase natural killer cell activity by up to 300%.