Goldenseal

Goldenseal (Hydrastis canadensis) — specific reference entry in your Materia Medica.
Parts usedRhizome & root (berberine‑rich)
Primary actionsIntensely bitter; mucosal astringent (traditional)
SystemsDigestive; Mucous membranes
PreparationsTincture (small, targeted amounts)Powder/capsules (short courses)
NotesA woodland plant of conservation concern—seek cultivated sources. Used sparingly for short periods; often unnecessary where gentler bitters suffice.
SafetyAvoid during pregnancy; interactions possible. Support conservation by choosing cultivated product. Educational content. Consult a qualified professional regarding individual use, especially with medications, pregnancy, or medical conditions.