Information on Mustard

Latin NameBrassica nigra
Other NamesBlack mustard
Part UsedSeeds
Herb FormsEssential oil, bulk seed, ready-made plasters.
AffectsDigestive system, Respiratory system
CautionsDo not use for longer than two weeks. Do not use externally for children under six years of age. Mustard plasters that are left on the skin for too long can cause deep burns. Don't fall asleep with the plaster on--make sure someone is monitoring the ti
Botanical InfoA common, highly-branched annual from the Mustard family with yellow flowers.
DescriptionMustard seed is mainly used medicinally in plaster form for bronchitis, rheumatism, and lumbago. It is sometimes added to a bath or used in foot baths for colds and flu. Internally, a decoction of mustard seeds is taken for lung problems, such as coughs and excess phlegm, and to warm and improve the digestion. Commercially-made mustard plasters are sometimes available in drugstores and herb shops or natural food stores.

Mustard has a taste of SPICY and a temperature of HOT.


Decoction1 cup 2-3 x daily

Ailments Treated by Mustard

AilmentTreatment SupportApplication
Lungs, congestedexpectoranttea
Rheumatism, chronicrubefacientplaster
Digestion, poorwarming digestive stimulant, appetizertea, tincture, seeds in food


McGuffin, M. et al. 1997. Botanical Safety Handbook. Boca Raton: CRC Press.
Felter, H.W. and J.U. Lloyd. 1983. (1898). King's Dispensatory. Portland, OR: Eclectic Medical Publications.
Wren, R.C. 1988. Potter's New Cyclopaedia of Botanical Drugs. Essex: C.W. Daniel Co. Ltd.