The goldenseal rhizome is rich in alkaloids: hydrastine, berberine, and canadine, in addition to other phytochemicals, oils, and resin.
Honokiol.
Amargogentin.
Citral.
Diosgenin.
Flavanoids, quercetin.
Crocetin and crocin.
Anthraquinone glycosides.
Flavones, baicalein.
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Ruscogenin and neuorscogenin.
Cinnamaldehyde, eugenol.
Caffeic acid glycoside.