Pharmaceutical Latin: Semen Sterculiae Lychnophorae
Common English: Sterculia Seed
Boat Sterculia Seed
Boat-fringed Sterculia Seed
Herbs that Transform Phlegm and Stop Coughing: Herbs that Cool and Transform Phlegm-Heat
Taste Temperature Entering Meridians Dosage
(Slightly Sweet)
Large Intestine
2-5 pieces
Actions Indications/Syndromes

Clears and disseminates Lung Qi

Sore throat, hoarseness, Phlegm-Heat cough and constrained Lung Qi

Used alone as a tea for hoarseness

Moistens the Intestines and unblocks the bowels

Mild to moderate constipation due to Heat clumping in the Intestines, often with concurrent headache, red eyes and fever

Can be used alone for mild cases

Encourages the expression of rashes

Adjunctively, as an external wash, for incomplete expression of rashes

  • Use caution for those with loose stools.

Rx. Platycodi
Jie Geng
Periostracum Cicadae
Chan Tui
Bul. Fritillariae
Bei Mu

Rx. Scrophulariae
Xuan Shen

Rz. Acori Tatarinowii
Shi Chang Pu
Hb. Menthae Haplocalycis
Bo He

Hoarseness due to Lung Heat

Cough due to Phlegm-Heat

Hoarseness, pain and swelling of the throat due to Yin Deficiency Fire

Hoarseness due to Wind-Heat Invading the Lungs

Rx. Glehniae/Adenophorae
Sha Shen
Rx. Rehmanniae
Sheng Di Huang
Rx. Glycyrrhizae
Gan Cao
(Sm. Oroxyli)
(Mu Hu Die)

Sm. Cannabis
Huo Ma Ren
Sm. Pruni
Yu Li Ren

Hoarseness due to either Lung Heat or impairment of the proper dissemination of Lung Qi and injury to the Fluids

Mild constipation due to Heat clumping in the Intestines. For serious cases add downward-draining herbs


  1. Some sources say that this herb eliminates Heat and toxin, moistens the Lung and clears the throat to treat toothache, dry cough with no sputum, throat inflammation with hoarseness, tonsillitis and constipation.
  2. This herb excels at disseminating Lung Qi while simultaneously in blocking and draining the Intestines.
  3. Both Pang Da Hai and Rx. Platycodi Jie Geng disseminate Lung Qi, cool the Lungs, resolve toxicity and benefit the throat. Jie Geng is more intense. It raises Lung Qi, releases the Exterior, benefits the throat by eliminating Phlegm and pus and directs the actions of the other herbs to the Upper Jiao. It also treats dysenteric disorder and abdominal pain. Pang Da Hai is cooling, moistening, drains constrained Fire and is used specifically used for throat disorders. it also moistens the Intestines and treats mild cases of constipation and blood in the stool.
  4. Both Pang Da Hai and Fr. Momordicae Luo Han Guo cool Lung Heat, lubricate the Intestines, are gentle and are often used as stand-alone herbs for sore throats and coughs. Pang Da Hai disseminates and disperses and excels at opening and spreading the Lung Qi and cooling and draining Fire from constraint. It is primarily indicated for hoarseness, loss of voice, sore throat and Phlegm-Heat cough due to blocked Lung Qi from constraint. Luo Han Guo moistens and cools to threat Phlegm-Fire cough and constipation. It is stronger at moistening Intestines than Pang Da Hai.
  5. Pang Da Hai and Sm. Oroxyli Mu Hu Die are two of the best herbs to restore loss of voice. They can be taken as tea throughout the day for those who need to speak or sing for a prolonged period of time.