It is a food supplement based on Echinacea, Astragalus, Reishi, Shiitake, Maitake, Zinc and Vitamins C and D3. The immune system is a complex network of cells, organs and tissues that is responsible for defending the body against invading microorganisms. A healthy immune system must be able to recognize and properly attack these harmful organisms. Provides vitamin C, vitamin D and zinc that contribute to the normal functioning of the immune system. With concentrated extracts of echinacea and astragalus, two of the most recognized plants for their synergy. With reishi, shiitake and maitake mushrooms, especially recognized by the oriental tradition.