EHB (echinacosides, hydrastine, berberine) combines nutrients and herbs in a complex immune formula.* EHB provides echinacosides from Echinacea and alkaloids including hydrastine, berberine, and canadine from a proprietary blend of Goldenseal and Oregon grape (Mahonia aquifolium) root. Echinacea used in EHB is from a proprietary blend of E. angustifolia, purpurea, and pallida species. Other herbs included in the formula include garlic (Allium sativum), deglycyrrhizinated licorice (Glycyrrhiza glabra) root, and ginger (Zingiber officinale) root. Vitamins A, C, B6, and zinc are included in substantive amounts.