NOW Foods Echinacea Root 400 mg

What the brand says

Echinacea (purple coneflower) is a native American herb that was once widely used by the Plains Indians and is now used by millions of consumers worldwide. Our Premium Echinacea is standardized to a minimum of 4% Echinacosides, an active measurable component in Echinacea. We add synergistic Echinacea purpurea Root to complement the standardized Echinacea.