Echinacea Plus contains a proprietary blend of the leaves, flowers and stems of organically grown Echinacea angustifolia and Echinacea purpurea plus a water-soluble dry extract of Echinacea purpurea root (6:1). In combination this delivers the equivalent of 1,275 mg. of dried herb and root per tea bag serving. In modern studies, Echinacea herb & root preparations have shown measurable immunomodulatory activity. One of the ways that echinacea preparations support the Defense mechanism of body is by inducing interferon production, if needed by your body. Interferons are proteins produced by the Defense mechanism of body to regulate normal immune response. Echinacea contains phenolic compounds, polysaccharides, alkylamides and flavonoids, all of which contribute to its actions.