Zhī Mǔ (知母), known in English as Anemarrhena (Anemarrhena asphodeloides), is a cold, bitter and sweet Chinese herb from the Clear heat category. It enters the Lung, Stomach and Kidney channels. Its main action: clears Heat, drains Fire from Lung and Stomach.

Illustration of Zhī Mǔ (Anemarrhena), the dried herb
Illustration of the dried herb. Hear it pronounced in Mandarin:
PinyinZhī Mǔ (Zhi Mu)
Chinese知母
EnglishAnemarrhena
Botanical nameAnemarrhena asphodeloides
CategoryClear heat
NatureCold
FlavourBitter, Sweet
ChannelsLung, Stomach, Kidney
Dosage6–12g
CautionsDiarrhoea; Spleen deficiency; Cold patterns

Actions

  • Clears Heat, drains Fire from Lung and Stomach
  • Nourishes Yin, moistens Dryness
  • Clears Heat in Kidney, reduces steaming bone disorder

Indications

  • Qi-level Heat (with Shi Gao)
  • Yin deficiency Heat with night sweats
  • Lung Heat cough with thick phlegm

How to remember Zhī Mǔ

Clear heat herbs are mostly cool or cold and bitter, and most enter the Stomach and Liver channels.

You can work these out
Cold, Bitter: like most Clear heat herbs
Lung and Stomach channels: from its action “drains Fire from Lung and Stomach”
Kidney channel: from its action “Clears Heat in Kidney”
Learn by heart
Sweet: unusual for Clear heat herbs (most are bitter)

Formulas containing Zhī Mǔ

Other Clear heat herbs

Test yourself

What is the nature and flavour of Zhī Mǔ?

Zhī Mǔ is cold and bitter and sweet.

Which channels does Zhī Mǔ enter?

Zhī Mǔ enters the Lung, Stomach and Kidney channels.

What are the actions of Zhī Mǔ?

Clears Heat, drains Fire from Lung and Stomach; Nourishes Yin, moistens Dryness; Clears Heat in Kidney, reduces steaming bone disorder.

What is Zhī Mǔ used for?

Qi-level Heat (with Shi Gao); Yin deficiency Heat with night sweats; Lung Heat cough with thick phlegm.

Which formulas contain Zhī Mǔ?

Bái Hǔ Tāng, Zhī Bǎi Dì Huáng Wán, Suān Zǎo Rén Tāng, Xiāo Fēng Sǎn, Yù Nǚ Jiān and Qīng Gǔ Sǎn.

Practise Zhī Mǔ and the other 290 herbs

Recognise each herb from its picture, recall its nature, flavour, channels and actions, and review it again just before you would forget it.

Try the 5-question herb quiz

Or practise a TCM case

Shen Study is a study tool. Doses and cautions are as taught in standard Chinese materia medica texts; they are not prescribing advice.