Hydrastine (Goldenseal Phthalideisoquinoline · Haemostatic · Berberine MDR Synergy)
| Compound | Hydrastine (β-Hydrastine) |
| Chemical class | Alkaloid — Isoquinoline / Phthalideisoquinoline (Related to noscapine scaffold) |
| CAS | 118-08-1 |
| Primary source | Hydrastis canadensis (goldenseal rhizome, approximately 2–4% of dry weight) |
| Key applications | Astringent; haemostatic; mucosal membrane tonic; uterotonic (obstetric historical); product-live via Goldenseal |
| Claim strength | Moderate |
| Typical form | Goldenseal extract standardised to hydrastine + berberine; hydrastine isolate |
| Buy from Herbuno |
Goldenseal Extract Powder → Goldenseal Liquid Extract (Water Soluble) - Hydrastis canadensis → |
Name origin: From Hydrastis (the goldenseal genus, from Greek hydor = water + drastikos = effective). Hydrastine was isolated from goldenseal by Alfred Peter Dupré and William John MacNab in 1851. It belongs to the phthalideisoquinoline class — the same structural family as noscapine (from opium) and narcotine, but from goldenseal (Hydrastis canadensis). Goldenseal contains a triumvirate of bioactive alkaloids: berberine (primary, ~4–6% dry weight — already built SM8), hydrastine (~2–4%), and canadine/l-tetrahydroberberine (~0.5–1%). These three alkaloids have complementary mechanisms and contribute to goldenseal’s broad traditional applications. Traditional use: Goldenseal is one of the most important North American medicinal plants — used by Cherokee, Iroquois, and other Native American peoples for mucosal membrane inflammation (eye infections, mucous membrane ulcers), skin infections, and GI disorders. European settlers adopted goldenseal extensively in the 19th century (American Eclectic medicine). Historical obstetric use as a uterotonic (labour stimulant) reflects hydrastine’s adrenergic-blocking and uterine smooth muscle effects — this application is contraindicated in pregnancy without medical supervision. Commercial source: Goldenseal extract (water-soluble and oil-soluble forms) is available from Herbuno. Hydrastis canadensis is an at-risk plant in North America — overharvesting for commercial goldenseal demand has depleted wild populations. Responsible sourcing requires cultivated goldenseal or certified sustainable wild harvest.
Evidence for Hydrastine Applications
Haemostatic and astringent (mucosal): Hydrastine produces vasoconstriction via alpha-adrenergic receptor activation — the primary mechanism for haemostatic (bleeding-reducing) activity in mucosal tissues. Traditional applications for post-partum haemorrhage and mucosal bleeding are mechanistically supported, though clinical evidence is from historical case reports rather than RCTs. Claim strength: Moderate (mechanism established; clinical evidence traditional).
Antimicrobial (synergy with berberine): Hydrastine has moderate direct antimicrobial activity. More importantly, hydrastine inhibits the Multidrug Resistance Pump (MDR pump) in bacteria, preventing efflux of berberine from bacterial cells. This synergistic MDR pump inhibition dramatically enhances berberine’s antimicrobial efficacy against methicillin-resistant Staphylococcus aureus (MRSA) and other resistant organisms. The berberine-hydrastine synergy in goldenseal extract is considered a key advantage of whole-plant extract over isolated berberine. Claim strength: Moderate.
Anti-inflammatory and mucosal tonic: Hydrastine reduces mucosal inflammation via alpha-adrenergic vasoconstriction and NF-κB inhibition in epithelial models. The tightening/toning effect on mucous membranes gives goldenseal its traditional reputation as a mucosal membrane tonic across the respiratory, GI, and urogenital tracts. Claim strength: Moderate.
Goldenseal Extract Powder →
Goldenseal Liquid Extract (Water Soluble) - Hydrastis canadensis →
Browse Standardised Extract Powders →
Dosage & Formulator Specification
Goldenseal extract standardisation: specify both berberine AND hydrastine content by HPLC. Standard commercial goldenseal extracts are typically 5–10% total alkaloids (combined berberine + hydrastine + canadine). For mucosal health applications: 300–600 mg/day standardised goldenseal extract. For anti-infective applications with berberine synergy benefit: choose whole goldenseal extract over isolated berberine to retain the hydrastine MDR-pump inhibitory co-function. Sustainability note: require verified cultivated or certified sustainable wild-harvest source documentation from Herbuno for all goldenseal materials. Wild goldenseal is a threatened species under CITES Appendix II.
Contraindications: hydrastine’s uterotonic activity makes goldenseal extract contraindicated in pregnancy. Not for use in neonates (berberine may cause neonatal jaundice). Drug interaction consideration: hydrastine may inhibit CYP3A4 — monitor for interactions with CYP3A4-metabolised drugs.
Frequently Asked Questions — Hydrastine
Is hydrastine or berberine the more important alkaloid in goldenseal?
Both are important — but for different reasons. Berberine has far more extensive clinical evidence (blood glucose, antimicrobial, lipid) from its widespread presence in multiple botanicals. Hydrastine’s key distinctive contribution is MDR pump inhibition that synergises berberine’s antimicrobial activity. For general metabolic applications, berberine alone may suffice. For anti-infective applications (particularly MRSA and resistant organisms), the berberine–hydrastine combination from goldenseal extract offers a meaningful advantage over isolated berberine.
Why is goldenseal overharvested?
Goldenseal (Hydrastis canadensis) grows slowly in specific Appalachian forest habitats — it requires 5–7 years from seed to harvestable size. Rising demand (partly driven by a false but persistent internet belief that goldenseal masks drug tests in urine — it does not) has severely depleted wild populations. Commercial demand has not been matched by cultivation development. CITES Appendix II listing (1997) requires export permits but does not restrict domestic US harvest. United Plant Savers lists goldenseal as an at-risk native plant. Responsible formulators specify cultivated goldenseal.
Can goldenseal mask drug test results?
No — this is a persistent and entirely false belief. Goldenseal does not mask, mask, or invalidate urine drug tests for cannabis, opioids, or any other substance. The myth likely originated from a 1993 detective novel (John Uri Lloyd’s “Stringtown on the Pike”), not pharmacological evidence. Multiple studies have definitively disproven drug-test masking by goldenseal. Unfortunately, this false belief continues to drive commercial demand, contributing to overharvesting.
Is the berberine-hydrastine synergy unique to goldenseal?
The MDR pump inhibition by hydrastine enhancing berberine activity has been specifically studied in goldenseal combinations. Other berberine-containing plants (barberry, coptis, phellodendron) do not naturally co-deliver hydrastine — making goldenseal extract unique for this specific mechanism. Formulation of berberine + hydrastine from separate sources can theoretically replicate this, but whole goldenseal extract is the natural co-delivery system with established traditional use rationale.
Related compounds: Berberine, Canadine, Sanguinarine, Noscapine
Claim-strength scale – High = multiple human RCTs; Moderate = limited trials or strong preclinical convergence; Emerging = early-stage lab or animal data.
← HerbIQ Compound Index · HerbIQ P02: Extraction · HerbIQ P03: Delivery