Gan Cao is the dried root of Glycyrrhiza uralensis, a Central Asian legume prized in TCM for tonifying qi, harmonizing other herbs, and soothing inflammatory conditions. Its characteristic sweet taste and moist nature make it a cornerstone adaptogenic ingredient that moderates the potency of formulas while supporting digestive and respiratory wellness.
root
decoction, tea, powder, tincture
3–9g dried root daily in decoction; 1–2g powder in warm water twice daily
Long-term use can cause hypertension and low potassium. Avoid in pregnancy.
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