Mullein is high in iron, magnesium, potassium, and sulfur. It is considered the herb of choice for respiratory problems and pulmonary diseases. Not only does it loosen mucus and expel it out of the body, but it also calms spasms, is a natural painkiller, and helps to reduce swelling in the glandular system.
Common mullein, Verbascum thapsus, is a tall biennial that tolerates a wide range of growing conditions and is found throughout most of North America. As an herb, mullein is most commonly used to treat earaches and coughs, but has other uses as well.