Part Used: Dried root (autumn harvested)
Osha (Ligusticum porteri) is found in the Southwest and Rocky Mountain states, which is a traditional remedy used by Native Americans for respiratory infections. Like other bitter herbs, Osha root can limit indigestion, and increase appetite. It is frequently taken at the onset of a respiratory infection to produce sweating, which, according to folk wisdom will help avert a full blown cold. It is also used as a cough suppressant and expectorant during respiratory infections. It is indicated for a dull mind that is forgetful, sinuses full, head feels clogged with mucus and easily catches a cold or often has influenza symptoms. The herb is mainly used as antiviral, carminative, diaphoretic, diuretic, and immune stimulating properties. Osha is used in respiratory infections, chronic viral diseases, and toothaches to slightly anesthetize the area. It is indicated for any respiratory disease, especially when it is debilitating with much mucus and congestion in the tissues and digestive irritation. As with all herbs high in volatile oils, this plant acts on both respiratory and urinary tracts.
The roots, seed and essential oil (obtained from the roots and the seed) of Osha are a bitter, camphoraceous warming herb that stimulates the circulation, kidneys and uterus. They are also antirheumatic, antispasmodic, diaphoretic, digestive, expectorant, febrifuge and stomachic. They are used internally in the treatment of eruptive fevers, bronchial infections, digestive complaints, toothache, painful menstruation and retained placenta. They have also been used to treat TB and headaches. An infusion of the roots is used externally to treat body aches.
Plants for a Future Database. http://www.pfaf.org/database/plants.php?Ligusticum+porteri
Herbal Remedies. http://www.herbalremedies.com/osha-root-information.html
Materia Medica. http://www.herbaltransitions.com/materiamedica/Ligusticum.htm