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| Photo copyright Steven Foster |
Goldenseal (Hydrastis canadensis)
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| Photo copyright Steven Foster |
Parts used and where grown: Goldenseal is native to eastern North America and is cultivated in Oregon and Washington. The dried root and rhizome are used.
In what conditions might goldenseal be supportive?
| • common cold/sore throat | • recurrent ear infections |
Historical or traditional use: Goldenseal was used by the American Indians as a treatment for irritations and inflammation of the mucous membranes of the respiratory, digestive, and urinary tracts. It was commonly used topically for skin and eye infections. Because of its antimicrobial activity, goldenseal has a long history of use for infectious diarrhea, upper respiratory tract infections, and vaginal infections. Goldenseal is often recommended in combination with echinacea for the treatment of colds and flu.
Active constituents: The two primary alkaloids are hydrastine and berberine, along with smaller amounts of canadine. Berberine, which ranges from 0.5-6.0% of the alkaloids present in goldenseal root and rhizome, has been the most extensively researched. It appears to have a wide spectrum of antibiotic activity against pathogens, such as Chlamydia species, E. coli, Salmonella typhi, and Entomeba histolytica.1
How much should I take? Most people take 4-6 grams of powdered goldenseal root and rhizome supplements per day as tablets or capsules. For liquid herbal extracts, 4-6 ml are used. Continuous use should not exceed three weeks with a break of at least two weeks between use. Goldenseal powder as a tea or tincture may soothe a sore throat.
Are there any side effects or interactions? Taken as recommended, goldenseal is generally safe. However, as with all alkaloid-containing plants, high amounts may lead to gastrointestinal distress and possible nervous system effects. Goldenseal is not recommended for pregnant or lactating women.
References:
1. Hahn FE, Ciak J. Berberine. Antibiotics 1976;3:577-88.
Copyright © 1998 Virtual Health, LLC
It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over-the-counter medication is also available. Consult your physician, nutritionally-oriented health care practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications.The information presented in HealthNotes Online is for informational purposes only.