Downward-Draining Herbs (Intro)

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Besides purging the Large Intestine, what is another important function of Da Huang (rhei radix et rhizoma)?

Descends rebellious Lung qi to stop cough and wheezing
Tonifies yin and generates fluids
Invigorates blood
Releases the exterior; for both wind-heat and wind-cold

Da Huang strongly invigorates blood. It can be internally for fixed abdominal masses or fixed pain; and it can be used externally in cases of injury and trauma.

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. pp. 236-237 [Q544]