Goldenseal-containing ovule: complete healing of cervical and vaginal lesions rose from 4% to 73% over 3 months; no control group; sponsor-funded
Petre 2023, Biomed Rep · Source
Goldenseal
Hydrastis canadensis root · certified organic
A prized North American root used on skin for about 200 years. Lab research shows its natural compounds work as a team, making its berberine more effective than berberine alone.
~200 yearsof North American herbal use on skin
Teamworkcompounds that boost its berberine (lab)
Pharmacopoeialisted in the American Herbal Pharmacopoeia
Why we love it
Goldenseal has been used on skin and mucous membranes in North American herbal medicine for about 200 years, first by Cherokee and other Native peoples and later by Eclectic physicians. We pair it with Oregon grape for a fuller berberine profile.
What does the research show?
Built-in teamwork (lab)
University lab studies found that goldenseal contains flavonoids that block a pump bacteria use to push berberine back out, so the whole plant extract worked better than purified berberine against Staphylococcus aureus.
Staph and MRSA (lab)
Goldenseal leaf extract reduced the signaling that MRSA bacteria use to cause damage, in lab tests.
Multi-ingredient vaginal products
Two open Romanian studies (47 and 345 women) tested a vaginal ovule that combined goldenseal with calendula, thyme, turmeric and other ingredients. Itch, burning, odor and pH improved, but there was no comparison group, and the results can't be credited to goldenseal alone.
Berberine
Berberine, goldenseal's best-known compound, has its own lab research on yeast, vaginal bacteria and urinary bacteria, listed below.
Studies
Human study tested in people Lab study a starting point, not proof
Same ovule in aerobic vaginitis: itch, burning and odor fell significantly over 3 months; no control group
Cerviron pilot 2023 (NCT04735705), medRxiv preprint · Source
Goldenseal leaf extract reduced MRSA signaling and growth
Cech 2012, Planta Med · Source
Goldenseal extract boosted berberine's effect on S. aureus by blocking a bacterial pump
Ettefagh 2011, Planta Med · Source
Goldenseal flavonoids made berberine about 16 times more active against Staph aureus by blocking its defense pump
Junio 2011, J Nat Prod · Source
Goldenseal extract and its alkaloids berberine, hydrastine and canadine were antibacterial
Scazzocchio 2001, Planta Med · Source
Berberine-rich extract suppressed G. vaginalis when grown with lactobacilli; lactobacilli not inhibited
Vardeman 2026, Sci Rep · Source
Low-dose berberine reduced C. albicans sticking to vaginal cells
Zhao 2022, Front Pharmacol · Source
Berberine active against several Candida species and their biofilms
DDDT 2020, Drug Des Devel Ther · Source
Without killing them, berberine stopped urinary E. coli from sticking to cells and reduced the hair-like fimbriae they use to attach
Sun 1988, Antimicrob Agents Chemother · Source
Berberine slowed the growth of catheter-associated urinary E. coli and protected larvae from infection, with no toxicity to bladder cells
Petronio Petronio 2020, Molecules · Source
Berberine was antifungal on its own and worked together with fluconazole against Candida
Iwazaki 2010, Antonie van Leeuwenhoek · Source
Berberine plus fluconazole killed fluconazole-resistant Candida albicans
Li 2013, Antimicrob Agents Chemother · Source
How has it been used traditionally?
Goldenseal has entries in the American Herbal Pharmacopoeia and in Health Canada's monograph system, and is described in King's American Dispensatory (1898) for topical and mucous membrane use.
Is goldenseal safe on the vulva?
Goldenseal is used in a small amount, on the skin. Like other berberine herbs, it's generally not recommended during pregnancy or breastfeeding, or for newborns, so ask your healthcare provider first.
Last reviewed: November 2026.
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Reviewed by the Momotaro Apotheca medical team, including OB-GYNs and naturopathic doctors. Educational information, not medical advice. All ingredient research