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Yi Mu Cao (Chinese Motherwort)

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Slightly Cold Yi Mu Cao (Herba Leonuri Heterophylli)
Spicy, Bitter, Slightly Cold
Herba Leonuri Heterophylli
Tone Marks:
yì mŭ căo
Benefit Mother Herb


  • Invigorates Blood, Dispels Blood Stasis, Reduces Masses
    A very important herb for gynecological disorders due to blood stagnation. It regulated blood in the chong and treats irregular menses, amenorrhea, postpartum abdominal pain, heavy menses with clots, fixed abdominal masses, infertility and traumatic pain.
  • Promotes Urination, Reduces Swelling and Edema
    For acute systemic edema especially if blood in the urine. Treats dysuria, scanty urine, chronic edema, heavy sensation in the back and legs, abdominal distension, fullness after meals, sallow complexion, fatigue, listlessness and difficulty moving. For edema associated with chronic nephritis. Also for kidney stones.
  • Clears Heat and Toxin
    For dermatological disorders including eczema, sores, lesions, ulcers, itchy rashes, and toxic swellings

Contraindications and Cautions

  • Use strict caution in pregnancy
  • Do not use in Blood and Yin Deficient patients
  • Do not use in Yang Deficient patients with prolapse

Herb-Drug Interactions

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

Toxicity and Overdose

  • The alkaloid content makes this herb slightly toxic with symptoms including sudden general weakness, stiffness, paralysis, general body pains, oppressive sensation in chest, excess sweating, low blood pressure, cold extremities, shock, cyanosis, respiratory paralysis and miscarriage.


  • 9-15 grams in decoction, maximum dose of 30 grams (Bensky)
  • 10-15 grams in decoction, maximum dose of 30 grams (Chen)

This Herb Appears in the Following Formulas:

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