Soft rush pith (deng xin cao)

Juncus effusus

Traditionally attributed effects: cools the heart and promotes urination in cystitis and restlessness.

Safety notes

Not with cold from spleen and stomach deficiency. Traditional use is no proof of effectiveness; if you are pregnant, breastfeeding, taking medication or have a medical condition, consult a doctor or pharmacist.

Cautions by tradition (1)

Chinese materia medica: Always have an inconsolably crying baby checked.

Preparation

Pith of the stem. Usually as a decoction, together with other herbs.

Use in traditions

Described in the classical Chinese materia medica, in the group 'herbs that drain dampness'. The white pith (deng xin cao) used to serve as a lamp wick. It cools heat in the heart and drains fluid, for restlessness, sleeplessness in children and burning urination. In Japan tatami mats are woven from the same plant (igusa).

Applications

Use by tradition

How different herbal traditions describe this herb. Amounts are traditional guidelines checked for obvious errors; they are not medical advice. For poisonous plants no dosage is given on purpose.

Chinese materia medica

Nature and taste: sweet, cold
Meridians: heart, lung, small intestine

Attributed effects

For cystitis and nephritis from damp heat, sore throat and traditionally for incessant crying of babies from heat.

Preparation and amount

Traditional dosage: 2–3 g a day, usually in a decoction.

Caution: Always have an inconsolably crying baby checked.

Ways to prepare herbs: Decoction
Formulas: Ba zheng san

Sources

All herbs from Asia →