Concentrated source of bioactive pleuran for outstanding immune support* Backed by multiple clinical studies & real-world validation Safe and effective for ages 4 & up Powerful & Proven Mushroom Defense* Features clinically studied Imunoglukan P4H® pleuran, a unique bioactive compound found only in oyster mushrooms. This is a European favorite for intensive, daily support with millions of boxes sold worldwide.* Daily Immune Support* For ages 4 & up Promotes natural resistance Supports upper respiratory function* Clinically studied Imunoglukan P4H Sourced from oyster mushroom Includes synergistic vitamin C Safe & Effective Over 25 years of research Proven benefits for the respiratory system* First time available in the United States 40 published studies Available Exclusively from Terry Naturally!