I have recently started taking Nature's Way Echinacea Goldenseal(I mentioned the brand since other brands will have a different formulation. It has Organic Echinacea purpurea (stem, leaf, flower); Goldenseal (root); Echinacea angustifolia (root); Burdock (root); Gentian (root); Cayenne pepper (fruit); Wood Betony (stem, leaf, flower)). This seems to be helping my energy level greatly. I am taking 3 capsules two times a day as the label suggests.