canadensis showed tumorogenic properties in an animal study utilizing male and female mice and rats  which is in line to this research in which it showed to be the most toxic plant of all the extracts tested.
Harvest recovery of goldenseal, Hydrastis
INCI: Origanum vulgare leaf extract, thymus vulgaris (thyme) extract, cinnamomum zeylancum bark extract, rosmarinus officinalis (rosemary) leaf extract, lavandula angustifolia (lavender) flower extract, hydrastis
canadensis (golden seal) root extract
One of the herbs Reeleder is studying is goldenseal (Hydrastis
This is the problem Federal and State agencies face in trying to maintain the viability of wild goldenseal (Hydrastis
Canadensis) is a native herb which was used extensively by North American Indians as a tonic and other healing purposes, an insect repellent and a yellow dye.
As its cover article, issue 119 of the American Botanical Council's (ABC's) quarterly, peer-reviewed scientific journal Herbal-Gram features a comprehensive, 16-page article about the conservation status of goldenseal (Hydrastis
Berberine, an orangish-yellow alkaloid found at high levels in the bark and root structures of plants including Oregon grape (Mahonia aquifolium), goldenseal (Hydrastis
canadensis), barberry (Berberis vulgaris), and Chinese goldthread (Coptis chinensis), has a broad and wide history of use.
It is also isolated from Hydrastis
, Coptis, and Phellodendron species .
It is isolated from traditional Chinese herbal medicine, Coptis chinensis, and Hydrastis
* Golden seal (Hydrastis
canadensis) interacts with laxatives and can oppose their diarrhoeal effects leading to further constipation and gastrointestinal upsets (10)
Antibacterial activity and alkaloid content of Berberis thunbergii, Berberis vulgaris and Hydrastis