Hai Zao Yu Hu Tang: Chinese herbal medicine for Goiters and Phlegm
- Health Lab
- Feb 9
- 3 min read
Updated: Apr 28
Hai Zao Yu Hu Tang, or Seaweed Jade Pot Soup, is a time-honored Chinese herbal formula from the Ming Dynasty’s Surgery Authentic. Originally designed to treat ulcers—pus-filled infections on the skin or muscles—it gained fame for addressing “stone goiters,” hard, immovable tumors resembling stones.
This formula excels at resolving phlegm and softening hard masses, making it particularly effective for goiters caused by stagnant qi (energy) and phlegm.

What is Chinese herbal medicine Hai Zao Yu Hu Tang?
This herbal blend combines various ingredients, organized by the traditional Chinese medicine principles of monarch, minister, assistant, and envoy roles:
Main Ingredients (Monarch): Seaweed, kelpThese core components dissolve phlegm and soften hard masses, directly targeting goiters and forming the backbone of the formula.
Supporting Ingredients (Minister): Pinellia, Fritillaria thunbergiiThese herbs enhance the main ingredients by further breaking down phlegm and dispersing nodules.
Adjuvant Ingredients (Assistant): Lian Qiao (Forsythia fruit)Lian Qiao clears heat, reduces inflammation, and detoxifies, helping to shrink tumors and ease swelling.
Harmonizing Ingredients (Envoy): Dried orange peel, green orange peel, angelica root, chuanxiong, angelica pubescens, licoriceOrange peels regulate qi and improve energy flow, while angelica root, chuanxiong, and angelica pubescens promote blood circulation to support tumor reduction. Licorice harmonizes the formula, ensuring all ingredients work together smoothly.
How It Works
Hai Zao Yu Hu Tang targets goiters caused by “qi stagnation and phlegm accumulation.” In traditional Chinese medicine, qi stagnation refers to blocked energy flow, which disrupts blood circulation.
Phlegm accumulation occurs when dampness and phlegm condense into masses, forming hard, immovable tumors. These goiters typically feel stone-like, with unchanged skin color.
In modern terms, this condition resembles chronic inflammation leading to tissue overgrowth or benign tumors. The formula’s ingredients, like seaweed and kelp, soften these masses, while others, such as Pinellia and Lian Qiao, reduce phlegm and inflammation. Together, they restore balance by promoting qi and blood flow, clearing phlegm, and eliminating toxins.

Benefits of Hai Zao Yu Hu Tang
Dissolves Phlegm and Softens Masses: The formula effectively breaks down phlegm and softens hard goiters, relieving discomfort caused by these stubborn tumors.
Promotes Qi and Blood Flow: By regulating energy and improving circulation, it helps reduce blockages that contribute to tumor formation.
Potential Anti-Cancer Properties: Modern research suggests that ingredients like seaweed may boost immunity and inhibit tumor growth, offering promise for conditions like simple thyroid hyperplasia or benign thyroid tumors.
Modern Applications
Today, Hai Zao Yu Hu Tang is widely used for simple goiters and benign thyroid tumors. Seaweed, a key ingredient, is known for softening lumps and may help regulate factors linked to abnormal growths. Beyond thyroid issues, the formula can address other conditions caused by qi stagnation and phlegm, such as certain chronic inflammatory disorders. Its potential to clear phlegm and dampness also makes it a candidate for preventive care in modern integrative medicine.
Important Considerations
While Hai Zao Yu Hu Tang is effective, it requires careful use:
Individual Differences: People’s bodies respond differently to herbs. Consult a qualified Chinese medicine practitioner to tailor the dosage to your constitution.
Contraindications: Those with specific health conditions or on other medications should use caution to avoid adverse reactions.
Long-Term Use: Prolonged use may cause side effects, so follow a practitioner’s guidance.
Dietary Tips: Avoid spicy, greasy, or irritating foods during treatment to support the formula’s effectiveness.
Conclusion
Hai Zao Yu Hu Tang is a powerful example of ancient Chinese medicine’s enduring relevance. By dissolving phlegm, softening hard masses, and regulating qi and blood, it effectively treats goiters and related conditions.
Modern research highlights its potential in managing thyroid disorders and even preventing certain cancers. With professional guidance and attention to individual needs, this formula can offer safe, effective relief, bringing ancient wisdom to modern healing.
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