Compound Monograph
Marrubiin
A labdane diterpene lactone and the bitter principle of white and black horehound, valued as an expectorant and bitter tonic with documented antispasmodic activity.
Classification
Marrubiin is one of the diterpenes, part of the terpenoids class. The largest class of plant compounds, built from five-carbon isoprene units — the essential-oil aromatics, resins, bitter principles, saponins, and plant sterols.
Where Does It Come From? (4)
Marrubiin is one of the diterpenes, found in Black Horehound, Dagga, Hyssop and 1 other source.