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Hou Po (Magnolia Bark)

Previous Herb in CategoryNext Herb in Category Herb 4 of 8 in Aromatic Herbs that Transform and Dissolve Dampness

Warm Hou Po (Cortex Magnoliae Officinalis)
Bitter, Spicy, Warm, Aromatic
Cortex Magnoliae Officinalis
Tone Marks:
hòu pò


  • Moves and Regulates Qi, Resolves Stagnation
    Abdominal, epigastric, and/or chest fullness, bloating, loss of appetite, poor digestion, constipation, and a plum pit throat sensation.
  • Warms and Dries Damp
    For nausea, vomiting, distension, fullness in the abdomen and epigastrum, decreased appetite, diarrhea, and a turbid, greasy tongue coat.
  • Descends Qi, Calms Wheezing, Dissolves Phlegm
    For cough, wheezing and dyspnea with chest congestion and excess phlegm.

Contraindications and Cautions

  • Use with caution during pregnancy
  • Use with caution in cases of Qi Deficiency

Herb-Drug Interactions

  • Hou Po contains magnolol, a mild anticoagulant. Caution should be used in patients taking antiplatelets or anticoagulants including; aspirin, dipyridamole, clopidogrel(plavix), heparin, warfarin, and enoxaparin(Lovenox).

Toxicity and Overdose

  • None Noted


  • 3-10 grams in decoction 12
  • 3-9 grams in decoction 13


  • Hou Po is noted both traditionally and in modern research as having different effects depending on the dosage size.
  • Hou Po stands out in its ability to treat fullness and accumulation in the form of constipation when compared to Cang Zhu.

Clinical Studies and Research

This Herb Appears in the Following Formulas: