Goldenseal (Hydrastis canadensis) is a perennial herb native to North America whose root has been used in traditional medicine for centuries, particularly valued for its berberine content, a bioactive alkaloid shared with several other medicinal plants. Research suggests that berberine exhibits notable antimicrobial activity against a range of bacteria, fungi, and parasites, which has driven interest in goldenseal's potential role in supporting immune function and respiratory health. Studies indicate that berberine may also benefit digestive health by influencing gut microbiota and supporting healthy mucosal membranes, while preliminary findings point to topical applications for certain skin concerns. Though often paired with echinacea in supplement formulations, goldenseal's own body of research continues to grow, and ongoing investigation aims to better clarify its mechanisms and long-term effects in human health.
Compare this supplementThe studies provided do not contain any research on Goldenseal or its effects on digestive health. The linked studies...
View studies →The available research linked to this topic does not contain any studies investigating goldenseal or its active compo...
View studies →Research suggests that goldenseal and its primary active compound berberine raise notable safety concerns for skin he...
View studies →Research suggests that goldenseal and its key active compound berberine have attracted scientific interest for potent...
View studies →Research suggests that goldenseal may support certain aspects of immune function, particularly by influencing antibod...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 500–1,000 mg | Three times daily | Antimicrobial properties, digestive health, and immune support | Common dosage range cited in clinical and traditional use literature |
| Extract | 250–500 mg | Three times daily | Standardized berberine extract for antimicrobial and digestive applications | Based on standardized extract studies referencing berberine content |
| Liquid | 2–4 mL | Three times daily | Respiratory health and immune function support | Traditional and eclectic herbal medicine practice references |
| Powder | 500–750 mg | Twice daily | Digestive health and gastrointestinal antimicrobial effects | Commonly referenced in herbal monographs and traditional use |
| Topical | 10–20 mg | As needed | Skin health and antimicrobial wound applications | Based on topical berberine studies and traditional use |