The species of Echinacea that we know to date are three (Purpurea-Angustifolia-Pallida). Of these, Purpurea and Angustifolia are the most studied in terms of their action in the natural enhancement of the immune system. Innumerable studies prove its beneficial properties especially in the autumn or winter months, when the body needs strengthening and shielding in order to be able to cope.