This product is the dried phloem of the bark or root bark of the elm tree (Ulmus pumila LINN.) from the Ulmaceae family. It is found throughout China. The best quality is characterized by thick flesh, white color, and a sweet, slightly bitter taste. The old branches and root bark are harvested in spring and autumn, and the inner bark is immediately peeled off and dried in the sun.

bubble_chart Properties and Meridians

Sweet, neutral. Act on lung meridian. Act on spleen meridian. Act on bladder meridian.

bubble_chart Efficacy

It benefits all orifices, promotes urination and defecation, and eliminates dampness and heat.

bubble_chart Indications

Treats constipation and urinary retention, five types of strangury with swelling and fullness, scabies and ringworm, abscesses and swellings, habitual abortion.

bubble_chart Modern Pharmacology

The sap contains proline and α-aminobutyric acid. The heartwood contains flavonoids such as 7-hydroxycadalenal and 7-hydroxycalamenal.