The respiratory system consists of the lungs and a series of associated passageways leading into and out of them. The upper respiratory system includes the nose, throat and associated structures. The lower respiratory system includes the larynx, trachea, bronchi, and lungs. The cardiovascular system transports the gases in the blood between the lungs and the cells. Bloodroot is often used in very small doses for asthma patients, mostly as an expectorant.
Larger doses tend to be sedative, and excess dosage can be fatal.
Externally, this plant can be used for eczema, sores, and other disorders of the skin. The oil extract is healing for burns, wounds, sores, bruises, skin problems, neuralgia, and sciatica. A valuable herb for respiratory disorders including coughs, hoarseness, bronchitis, catarrh, hay fever, and whooping cough. It may also be used for catarrh in the gastrointestinal tract and for digestive cramps. A healing poultice for wounds, inflamed conditions, and for painful skin areas.