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Yan Hu Suo (Corydalis Rhizome)

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Warm Yan Hu Suo (Corydalis Rhizome)
Spicy, Bitter, Warm
Corydalis Rhizome
Tone Marks:
yán hú suŏ


  • Moves Qi and Blood, Relieves Pain, Reduces Masses
    Important herb for pain off all types. For Pain in the chest, abdomen, and limbs as well as gynecological pain. Treats dysmenorrheal, coronary artery disease, irregular heart beat, and prolonged Qi and blood stagnation leading to masses. Especially for palpable masses in the abdomen and stagnation in the Xue level.

Contraindications and Cautions

  • Do not use during pregnancy
  • Use caution for deficient patients

Herb-Drug Interactions

  • This section is being researched, and is not completed.

Toxicity and Overdose

  • High dose can result in drowsiness, dizziness, and abdominal distention. A toxic dose of 60-120 grams results in dizziness, facial pallor, drowsiness, weakness, dyspnea, spasms, low blood pressure, weak pulse, shock, titanic convulsion, tremor, and respiratory inhibition. Possible allergic reactions include drug fever, erythema, and pruritus with nausea, dizziness, shortness of breath, and numb lips and extremities.


  • 3-9 grams (Bensky)
  • 3-10 grams in decoction, max of 20 grams, 1-1.5 grams in powder (Chen)

This Herb Appears in the Following Formulas: