Activated Hexose Correlated Compound (AHCC). Increases Immune Function. Increases NK Cell and Macrophage Activity. Facilitates Liver Detoxification. AHCC® (Active Hexose Correlated Compound) is a proprietary blend of several species of mushroom mycelia. It is cultivated and enzymatically modified and grown in rice bran. According to modern research AHCC may significantly increase Natural Killer (NK) Cell activity cytokine production and macrophage activity all vitally important to the immune system.