Goldenseal

Goldenseal (Hydrastis Canadensis) is a plant native to North America which contains a compound called berberine. It is used as a dietary supplement for colds and other respiratory tract infections, allergic rhinitis, ulcers, and digestive upsets such as diarrhea and constipation in humans. The roots of goldenseal are dried and used to make teas, extracts, tablets, or capsules.

Research in chickens showed that the addition of goldenseal to the diet of laying hens ameliorated hyperlipidemic status by lowering cholesterol and low-density lipoprotein cholesterol levels. It was also found to modulate the cecum microbiota composition.