Purica Immune 7 - A superior formulation of extracts from six mushrooms recognized for their immune-enhancing effects, whole mushroom mycelia, and Nutricol. Immune 7 provides the body with a high concentration of beta-3 glucans—powerful compounds that have been shown in numerous studies to strengthen the immune system and recapture health. These are obtained from a variety of mushrooms since beta-3 glucans differ from species to species and each has a unique impact on the immune response.