Health Aid's Echinacea 500 mg dietary supplement is produced by organic echinacea cultivars of the Purpurea and Angustifolia varieties, for maximum effect.
Echinacea contains a number of substances, such as alkaloids, glycosides, amides, terpenoids, etc., to which it owes its properties. Thus, anyone using echinacea should be careful if the herb is standardized in these substances, so that there is a similar effect.