# Houttuynia cordata (Dokudami)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/houttuynia-cordata-dokudami
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-18
**Evidence Score:** 4 / 10
**Category:** Other
**Also Known As:** Houttuynia cordata, Fish Mint, Fish Leaf, Chameleon Plant, Rainbow Plant, Yuxingcao, Lizard Tail, Bishop's Weed

## Overview

Houttuynia cordata is a Japanese herb containing quercetin and other flavonoids that modulate [immune function](/ingredients/condition/immune-support) and reduce [inflammation](/ingredients/condition/inflammation). It works by inhibiting NF-κB signaling pathways and enhancing macrophage activity.

## Health Benefits

- Supports immune health by enhancing [white blood cell](/ingredients/condition/immune-support) activity, providing robust defense against infections. - Reduces inflammation by inhibiting pro-[inflammatory pathway](/ingredients/condition/inflammation)s, promoting joint and muscle health. - Aids in detoxification by supporting [liver function](/ingredients/condition/detox), facilitating toxin elimination. - Enhances [skin health](/ingredients/condition/skin-health) by reducing [oxidative stress](/ingredients/condition/antioxidant), leading to a clearer complexion. - Supports respiratory health by acting as a natural expectorant, easing breathing. - Improves [digestion](/ingredients/condition/gut-health) by promoting healthy gut flora, aiding in nutrient absorption. - Alleviates allergy symptoms by modulating immune response, reducing sensitivity to allergens.

## Mechanism of Action

Houttuynia cordata's bioactive compounds, including quercetin, chlorogenic acid, and rutin, inhibit nuclear factor-κB (NF-κB) [inflammatory pathway](/ingredients/condition/inflammation)s and cyclooxygenase-2 (COX-2) enzymes. The herb enhances phagocytic activity of macrophages and increases interleukin-2 production for [immune support](/ingredients/condition/immune-support). Its [hepatoprotective](/ingredients/condition/detox) effects involve upregulating glutathione S-transferase and other phase II detoxification enzymes.

## Clinical Summary

Limited human studies exist, with most research conducted in animal models and cell cultures. A small 2018 study (n=45) showed 15% reduction in inflammatory markers after 8 weeks of supplementation. Animal studies demonstrate significant [anti-inflammatory](/ingredients/condition/inflammation) effects at 200-400mg/kg doses. More robust human clinical trials are needed to establish definitive therapeutic benefits and optimal dosing protocols.

## Nutritional Profile

{"macronutrients": {"protein": "1.4 g per 100 g", "fiber": "2.7 g per 100 g"}, "micronutrients": {"vitamin_C": "25 mg per 100 g", "calcium": "77 mg per 100 g", "potassium": "390 mg per 100 g", "iron": "1.2 mg per 100 g"}, "bioactive_compounds": {"quercitrin": "0.5 mg per 100 g", "hyperin": "0.3 mg per 100 g", "chlorogenic_acid": "0.2 mg per 100 g"}, "bioavailability_notes": "The bioavailability of quercitrin and hyperin may be enhanced when consumed with fats, while vitamin C is water-soluble and readily absorbed."}

## Dosage & Preparation

Dosage should be determined by a healthcare provider. Consult a healthcare provider before use.

## Safety & Drug Interactions

Houttuynia cordata is generally well-tolerated but may cause mild gastrointestinal upset in sensitive individuals. It can enhance the effects of anticoagulant medications due to its blood-thinning properties. Pregnant and breastfeeding women should avoid use due to insufficient safety data. Individuals with autoimmune conditions should consult healthcare providers before use due to immune-stimulating effects.

## Scientific Research

Studies have shown that Houttuynia cordata possesses [antimicrobial](/ingredients/condition/immune-support) and [anti-inflammatory](/ingredients/condition/inflammation) properties, with some research supporting its use in treating infections. However, more clinical trials are necessary to confirm these effects.

## Historical & Cultural Context

Houttuynia cordata has been used in traditional Asian medicine for centuries, valued for its detoxifying and healing properties. It is a staple in both culinary and medicinal practices across various cultures.

## Synergistic Combinations

Licorice root, Ginger, Green tea, Reishi mushroom

## Frequently Asked Questions

### What is the recommended dosage of Houttuynia cordata?

Typical dosages range from 300-600mg of standardized extract taken 2-3 times daily. Traditional preparations use 6-15g of dried herb as tea or decoction daily.

### How long does it take for Houttuynia cordata to work?

Initial immune support effects may be noticed within 1-2 weeks of consistent use. Anti-inflammatory benefits typically require 4-8 weeks of regular supplementation for noticeable improvements.

### Can Houttuynia cordata be taken with blood pressure medications?

Houttuynia cordata may enhance hypotensive effects of blood pressure medications due to its vasodilatory properties. Consult your physician before combining to avoid excessive blood pressure reduction.

### What are the active compounds in Houttuynia cordata?

Primary bioactive compounds include quercetin (2-4%), chlorogenic acid, rutin, and volatile oils like decanoyl acetaldehyde. These flavonoids and phenolic compounds provide the herb's therapeutic effects.

### Is Houttuynia cordata safe for liver disease patients?

While studies suggest hepatoprotective benefits, individuals with existing liver disease should use caution and medical supervision. The herb may interact with liver medications and alter hepatic enzyme activity.

### Is Houttuynia cordata safe during pregnancy and breastfeeding?

Houttuynia cordata has limited safety data for pregnant and breastfeeding women, and traditional use does not necessarily establish safety for these populations. It is advisable to avoid supplementation during pregnancy and lactation unless explicitly recommended by a healthcare provider, as some compounds may cross the placental barrier or transfer into breast milk. Pregnant or nursing individuals should consult with their obstetrician before using this ingredient.

### Does Houttuynia cordata interact with common antibiotics or antiviral medications?

Houttuynia cordata possesses inherent antimicrobial and antiviral properties, which theoretically could potentiate or interfere with prescription antibiotics and antivirals, though direct clinical interactions are not well-documented. To avoid unpredictable synergistic or antagonistic effects, it is prudent to maintain a 2–4 hour separation between Houttuynia cordata supplementation and antibiotic or antiviral medication doses. Always inform your healthcare provider about concurrent use of this herbal supplement with prescription antimicrobial agents.

### What is the difference between fresh, dried, and extracted forms of Houttuynia cordata?

Fresh Houttuynia cordata retains volatile compounds and heat-sensitive phytonutrients but has shorter shelf life and variable potency, while dried forms concentrate beneficial constituents and offer longer stability and consistent dosing. Extracts (liquid or powder) provide standardized active compound levels and superior bioavailability compared to whole plant material, making them more suitable for therapeutic supplementation. Dried whole plant and extracts are the most practical forms for supplemental use, with extracts generally delivering faster and more predictable results due to enhanced absorption.

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