Materia Medica

Asteraceae

Dandelion

Taraxacum officinale

A humble, bitter root that stimulates bile, wakes up sluggish digestion and gently supports elimination — the leaf is a gentle potassium-sparing diuretic.

Also known as
Lion's tooth, Pu gong ying
Parts used
Root, Leaf
Taste
Bitter, Sweet
Energetics
Cooling · Drying
Sourcing
Cultivated & wild

Actions

Bitter tonicCholagogueCholereticDiuretic (leaf)Prebiotic (root inulin)

Traditional use

Arab physicians of the 10th–11th centuries recorded dandelion for liver and spleen. Its French name pissenlit ('wet the bed') reflects its diuretic leaf.

A spring tonic across Europe, eaten fresh in salads to 'clear the blood' after winter.

Research

  • Leaf increases urine output

    Clinical

    A small human pilot study found increased urination frequency and volume after leaf extract.

    Clare BA, Conroy RS, Spelman K. J Altern Complement Med. 2009;15(8):929–934.

  • Root stimulates bile flow

    Traditional

    Long-standing use supported by older animal data; robust human trials are lacking.

Key constituents

Sesquiterpene lactones (taraxacin)
Bitter principles that stimulate digestive secretions.
Inulin
Prebiotic fiber, highest in autumn-harvested root.
Potassium (leaf)
Offsets potassium loss from diuresis.

Sourcing notes

Abundant and resilient. Avoid harvesting from lawns, roadsides or sprayed areas.

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