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immune

Goldenseal

Hydrastis canadensis

北美黄连

Pinyin: Běi Měi Huáng Lián

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Plant Family

Ranunculaceae

Part Used

Root and rhizome

Origin

Eastern North America (Appalachian region)

Safety Level

Caution

Overview

Goldenseal is a perennial herb native to the rich forests of eastern North America, with distinctive yellow roots and a single pair of lobed leaves. It is one of the most important herbs in North American herbalism and also one of the most endangered due to overharvesting. Goldenseal is often combined with echinacea for immune support.

Traditional Chinese Medicine Properties

Nature (四气)

cold

Flavors (五味)

bitter

Meridians (归经)

lung, stomach, liver

Health Benefits

✓ Broad-spectrum antimicrobial (antibacterial, antifungal, antiviral)
✓ Immune system support
✓ Anti-inflammatory
✓ Mucous membrane tonic
✓ May help with digestive infections (H. pylori, parasites)
✓ Bitter digestive stimulant
✓ Oral health support
✓ May have anti-tumor properties (berberine)

Traditional Uses

  • Infections of all kinds (bacterial, viral, fungal)
  • Digestive disorders and parasites
  • Mouth and gum infections (gargle)
  • Eye infections (wash - conjunctivitis)
  • Skin infections and wounds (external)
  • Upper respiratory infections
  • Sinusitis and allergies
  • Stomach ulcers and digestive inflammation

Active Constituents

The key compounds responsible for this herb's therapeutic effects:

Isoquinoline alkaloids: berberine, hydrastine, canadineBerberine - primary active alkaloidHydrastineBeta-sitosterolFlavonoidsEssential oilsResinsTannins

Usage & Dosage

How to Use

Used as tincture, capsules, tea, mouthwash, eyewash, and topical wash. Very bitter taste. Often combined with echinacea in immune formulas.

Suggested Dosage

Tincture: 2-5ml 2-4 times daily. Capsules: 250-500mg 3 times daily. Tea: 0.5-1g steeped 10-15 min (very bitter). Short-term use only (2-3 weeks max).

Quality & Storage

Harvest Season

Autumn, from plants 4-5 years old. Wild goldenseal is endangered - only use organically cultivated sources!

Quality Indicators

Bright yellow root with strong bitter taste. Standardized extracts list berberine content (5-10%). Only purchase from cultivated sources to protect wild populations. Sustainable cultivation is critical.

Storage

Dried root: airtight container, cool dark place, 2-3 years. Tincture: dark glass, cool place, 3-5 years.

Safety Information

Contraindications

Pregnancy (uterine stimulant - can cause miscarriage)BreastfeedingChildrenHigh blood pressureHeart disease (arrhythmia)Liver diseaseNewborns (can cause brain damage - kernicterus)Long-term use (not safe for extended use)Endangered in wild - only use cultivated!

Possible Side Effects

  • Digestive upset (nausea, constipation) - bitter taste
  • Skin irritation (topical)
  • Headache
  • Nervousness or agitation
  • Jaundice-like symptoms (very high doses)
  • Important: Should not be used for more than 2-3 weeks continuously
  • Pregnancy category: UNSAFE

Drug Interactions

  • Cyclosporine (may increase levels)
  • Blood thinners (warfarin)
  • Blood pressure medications (may increase BP)
  • Diabetes medications (may lower blood sugar)
  • Sedatives (may enhance effect)
  • Many CYP450 interactions - significant drug interaction potential

Note: Always consult with a qualified healthcare practitioner before starting any herbal supplement, especially if you are pregnant, nursing, have medical conditions, or take medications.

References & Research

Information on this page is based on traditional herbal knowledge and modern scientific research. For a comprehensive list of references, please refer to our full citations page.

ℹ️ Disclaimer

This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. The FDA has not evaluated these statements. Always consult a qualified healthcare provider before using herbal supplements.

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