Bì Xiè (萆薢), known in English as Rhizome dioscoreae (Dioscorea hypoglauca), is a neutral, bitter Chinese herb from the Drain damp category. It enters the Kidney and Stomach channels. Its main action: resolves turbid Damp — turbid painful urinary dysfunction.

Illustration of Bì Xiè (Rhizome dioscoreae), the dried herb
Illustration of the dried herb. Hear it pronounced in Mandarin:
PinyinBì Xiè (Bi Xie)
Chinese萆薢
EnglishRhizome dioscoreae
Botanical nameDioscorea hypoglauca
CategoryDrain damp
NatureNeutral
FlavourBitter
ChannelsKidney, Stomach
Dosage9–15g
CautionsKidney Yin deficiency without Damp

Actions

  • Resolves turbid Damp — turbid painful urinary dysfunction
  • Expels Wind-Damp, relieves Bi

Indications

  • Turbid, milky, or cloudy urine from Damp
  • Wind-Damp Bi

How to remember Bì Xiè

Drain damp herbs are mostly cool or cold and sweet, and most enter the Bladder channel.

Learn by heart
Neutral: unusual for Drain damp herbs (most are cool or cold)
Bitter: unusual for Drain damp herbs (most are sweet)
Kidney and Stomach channels: nothing in its group or its actions points to them

Other Drain damp herbs

Test yourself

What is the nature and flavour of Bì Xiè?

Bì Xiè is neutral and bitter.

Which channels does Bì Xiè enter?

Bì Xiè enters the Kidney and Stomach channels.

What are the actions of Bì Xiè?

Resolves turbid Damp — turbid painful urinary dysfunction; Expels Wind-Damp, relieves Bi.

What is Bì Xiè used for?

Turbid, milky, or cloudy urine from Damp; Wind-Damp Bi.

Practise Bì Xiè 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.