Home / Chinese Herb / ALBIZZIA BARK [合歡皮, HE HUAN PI]


Name : Albizzia BarkSilktree Albizia Bark / He Huan Pi

Chinese Name : 合歡皮

Latin Name : Cortex Albizzia


This herb is the dried bark and flowers of  an auspicious tree, Albizzia julibrissin Durazz, or A. kalkora (Roxb.) Prain of  the family Leguminosae. It is mainly grown in the Hebei, Henan, and Hubei provinces of China, and harvested in the spring and summer seasons. The bark is stripped from the tree, cut into sections, dried in the sun, and used unprocessed.

Albizzia bark was traditionally used as a sedative, anthelmintic, and discutient. A gummy extract is used as a plaster for carbuncles and swelling. Today, it is used for the treatment of palpitations and insomnia due to anxiety. Albizzia flower (he huan hua), the dried flower heads of A. julibrissin, is used the same way as albizzia bark to treat restlessness, anxiety, and insomnia.

Use of Albizzia Bark in TCM

Sweet in taste and neutral, it acts on the liver and heart meridians.

Effects, Medicinal Uses, and Combinations

  1. Tranquilizes the mind and relieves anxiety: for palpitations and insomnia caused by anxiety, albizzia bark is used alone in a decoction or combined with biota, turmeric, polygala root, and polygonatum stem.
  2. Invigorates blood circulation, and relieves swelling and pain: it is used to treat painful swellings caused by injuries, furuncles, or carbuncles.


In a decoction of 10 to 15 g.


The bark and flower are mild in action. This herb should not be used by pregnant women as a large dose may cause abortion.

Side Effects and Toxicity

No undesirable side effects or toxicity were reported at the therapeutic dose in classical Chinese materia medica.

Chemical Constituents

Albizzia bark contains triterpene saponins and tannin. A number of  lignans, together with some phenol glycosides, have also been isolated.

Pharmacological Findings

  1. Sedative, hypnotic, and antidepressant.
  2. Analgesic, anthelmintic, and diuretic.
  3. Induces intensive uterine contractions.