Heron's Bill
老鹳草 · Lǎo Guàn Cǎo
Eases joint stiffness and chronic loose stools
Properties
NeutralNeutral botanicalPungent, Bitter
Concerns
What it does
Common heron's bill works on joints and gut at once. In TCM, it removes channel obstructions to ease wind-damp impediment, the pattern behind stiff joints and aching bones that worsen with damp weather. It also stops chronic diarrhea and dysentery from damp-heat in the gut. The pungent-bitter profile both moves and astringes. Toxic in raw form, so always processed.
How to take it
Decoct 9–15g of processed heron's bill in water for 25 minutes. Drink 1 cup, 2x daily during acute joint flares or diarrhea episodes. Short-term only.
See a practitioner. Self-prescribing is risky given toxicity
Safety
- Toxic in raw form. Use only processed material
- Stay within practitioner-prescribed doses
- Skip during pregnancy
- Stop if nausea, dizziness, or rash develop
- Talk to your doctor before starting, especially if you take medication
Where it comes from
Common heron's bill (Erodium and Geranium species) is named for the bird-like shape of its seed pods, which look like a heron's beak. The Chinese name Lǎo Guàn Cǎo means 'old crane herb,' echoing the same shape. The plant grows wild across temperate northern China and Korea. In TCM, it's been used for centuries as both a joint-pain reliever and an anti-diarrheal, an unusual combination. Most modern Chinese pharmacopeias still list it for both indications.