Yu Xing Cao (Houttuynia cordata): The Hidden Herb for Lungs, Immunity, and Gut Balance

Welcome to Our Herbal Wellness Space

At 1st Chinese Herbs, we believe the best healing blends time-honored herbal traditions with today’s scientific understanding. Our commitment is to bring you the highest quality Traditional Chinese Medicine (TCM) herbs—sourced with care, tested for purity, and rooted in centuries of real-world use.

Today, we shine a spotlight on an herb that flies under the radar for many, but has long held a vital place in Chinese herbal practice: Yu Xing Cao (鱼腥草), also known as Houttuynia cordata, or “Fish Mint.” While its pungent aroma may raise eyebrows in the kitchen, this herb isn’t about culinary flair—it’s a functional botanical powerhouse used for serious work inside the body.

Whether you’ve come searching for natural lung support, a gut-soothing detox herb, or a deeper understanding of underused TCM botanicals, Yu Xing Cao offers something surprisingly potent—and surprisingly relevant in today’s world of viral threats, antibiotic resistance, and microbiome imbalance.

You may not have arrived here thinking, “What I really need is a strong-smelling leaf to clear out inflammation, infection, and toxins.” But here you are—and you’re in the right place.

In the next sections, we’ll explore:

Why Yu Xing Cao is a go-to herb in Traditional Chinese Medicine formulas for lung heat, intestinal damp-heat, and toxic stagnation

What modern research reveals about its antibacterial, antiviral, antifungal, and anti-inflammatory properties

How to use it effectively at home—including recipes, dosage guidelines, and smart herbal combinations

Who should consider using Yu Xing Cao—and who should avoid it

And most importantly for many of our visitors:
How Yu Xing Cao may offer supportive benefits for individuals dealing with chronic Lyme disease, co-infections, or gut-lung immune dysfunction—areas where its historical use and modern applications intersect powerfully

Whether you’re an experienced herbalist or just beginning your wellness journey, this page offers a deep dive into Yu Xing Cao, the fishy-scented botanical with fierce benefits—and growing relevance for immune-compromised conditions like Lyme disease.

What Is Yu Xing Cao (Houttuynia cordata)?

Basic Identification:

Chinese Name: Yu Xing Cao (鱼腥草)

Botanical Name: Houttuynia cordata

English Common Names: Fish Mint, Chameleon Plant, Heartleaf

Taste & Nature: Acrid, slightly cold

TCM Category: Herbs that clear heat and relieve toxicity

Meridians Entered: Lung, Large Intestine

Why Yu Xing Cao Works (TCM + Science)

TCM Perspective:

Yu Xing Cao is known for its unique ability to clear heat, reduce toxins, drain pus, and stop dysentery. It’s primarily used for:

Lung infections (including cough with yellow phlegm or pneumonia)

Sore throats and heat toxins in the respiratory tract

Abscesses and boils

Damp-heat in the intestines, such as bacterial diarrhea

Scientific Research:

Modern studies confirm Yu Xing Cao’s broad-spectrum potential:

Antibacterial & Antiviral Effects: Effective against E. coli, Staph aureus, and respiratory viruses (PubMed)

Anti-inflammatory & Immunomodulatory: Supports cytokine regulation and immune response

Gut Microbiota Modulation: Helps restore microbial balance in dysbiosis-related disorders

Lung Health & COVID-era Relevance: Studied as a botanical support for pulmonary inflammation

Primary Benefits of Yu Xing Cao

When to Use Yu Xing Cao

Cough with thick yellow sputum

Lung abscess or phlegm-heat congestion

Diarrhea from damp-heat or infection

Skin abscess or external infections

Viral or bacterial flare-ups, especially in lungs or gut

Not typically used long-term. Ideal for acute conditions, bacterial overgrowth, or lung flare-ups.

How to Use Yu Xing Cao

Check out our step by step page on How To Use Herbs 

Pro Tip: Yu Xing Cao is often used with Jin Yin Hua (Honeysuckle) and Huang Qin (Scutellaria) for respiratory heat and infection.

Cautions & Interactions

Avoid in cases of cold from deficiency (chronic weak digestion or loose stools)

Not recommended for long-term use without practitioner guidance

May cause nausea in sensitive individuals (aroma is strong)

Use with caution in pregnancy or breastfeeding

Common Questions About Yu Xing Cao

Q: Does Yu Xing Cao really smell like fish?
A: Yes—it’s nicknamed "Fish Mint" for a reason. The aroma comes from volatile oils responsible for its antimicrobial effects.

Q: Can I grow Yu Xing Cao at home?
A: Yes! It’s a fast-spreading, hardy perennial often grown in moist soil or containers.

Q: Is this herb safe to use during infections?
A: When used appropriately, Yu Xing Cao is a go-to TCM herb for respiratory and intestinal infections, often paired with clearing and detoxifying herbs.

Compare: Yu Xing Cao vs. Similar Herbs

Buy Yu Xing Cao at 1st Chinese Herbs

We offer premium-grade Yu Xing Cao (Houttuynia cordata), wildcrafted and tested for purity, so you can trust every scoop.

Available in cut & sifted, tincture, and bulk powder

Lab-tested, sulfur-free, TCM-approved

Shipped fresh and fast from our U.S. warehouse

Shop Yu Xing Cao Now see all forms below 
Need help combining this herb into a custom formula? Contact us — we’re happy to help!

How to Make Yu Xing Cao Tea

Ingredients (1–2 servings):

Dried Yu Xing Cao: 5–10 grams (about 1–2 tablespoons)

Filtered water: 2–3 cups

Optional additions (for flavor or synergy):

Mint leaves – cooling, helps with the strong aroma

Licorice root – harmonizes the formula and eases bitterness

Honey or lemon – to improve taste after steeping

Instructions:

Rinse the herbs
Quickly rinse the dried Yu Xing Cao in cool water to remove any dust or debris.

Simmer the herbs
In a small saucepan or herbal teapot, add Yu Xing Cao and water. Bring to a boil.

Reduce and simmer
Lower the heat and let the tea simmer gently for 15–20 minutes, covered.

Strain and serve
Remove from heat, strain out the herbs, and pour into a cup. Add optional ingredients like honey, lemon, or mint.

How Often to Drink:

For acute conditions (respiratory infections, lung heat, or gut issues):
1–2 cups daily for up to 5–7 days.

For maintenance or seasonal support:
2–3 times per week as part of a cleansing protocol.

 Notes & Precautions:

Not for long-term use without professional guidance.

Avoid use during pregnancy, or if you have a cold from deficiency (with chills, loose stool).

The aroma is strong—blending with herbs like mint, licorice, or chrysanthemum can make it more pleasant.

Want Recipes Using Yu Xing Cao?

We’re happy to share immune, respiratory, and detox herbal tea recipes using Yu Xing Cao.
 Just email us through our contact form, and we’ll send them your way.

 Sources & Further Reading

PubMed ID: 32867815 — “Houttuynia cordata: A multifunctional medicinal plant for immune and inflammatory disorders”

Additional TCM literature from Chinese Herbal Medicine: Materia Medica by Dan Bensky et al.

WHO Monographs on Selected Medicinal Plants

 Research Highlights on Yu Xing Cao (Houttuynia cordata)

1. Anti-COVID Properties

A study titled "Bioactive Components of Houttuynia cordata Thunb and Their Potential Mechanisms Against COVID-19 Using Network Pharmacology and Molecular Docking Approaches" investigates how components like quercetin and kaempferol in Houttuynia cordata may intervene in COVID-19 and cytokine storms through multiple molecular targets.pubmed.ncbi.nlm.nih.gov

PubMed Abstract

2. Lung Detox and Immune Modulation

The same study also discusses how Houttuynia cordata enhances macrophage function and reduces oxidative stress, contributing to lung detoxification and immune modulation.

PubMed Abstract

3. Gut Health

Another study titled "Sodium houttuyfonate derived from Houttuynia cordata Thunb improves intestinal malfunction via maintaining gut microflora stability in Candida albicans overgrowth aggravated ulcerative colitis" explores how sodium houttuyfonate, derived from Houttuynia cordata, helps in maintaining gut microflora stability and alleviating intestinal issues.pubmed.ncbi.nlm.nih.gov

PubMed Abstract