Pinyin: Du Zhong  Chinese: 杜仲
Pharmaceutical: Cortex Eucommiae
Taxonomy: Eucommia ulmoides
English: Hardy Rubber Tree / Chinese Rubber Tree

Tastes: Sweet, warm
Meridians Entered: Kidney and Liver

Actions & Indications:

1. Tonifies the Kidneys and Liver and strengthens the sinews and bones
   Kidney and Liver Deficiency with a weak, sore or painful lower back and knees, fatigue and urinary frequency
   Weakness of sinews and bones
2. Aids the smooth flow of Qi and Blood
   Promotes circulation for weak sinews and bones
3. Calms the fetus
   Deficiency Cold patterns with bleeding during pregnancy
   Prevents miscarriage when the fetus is agitated or restless and when a pregnant woman has significant back pain or presents with a deficient condition
   Threatened abortion
4. Lowers blood pressure
   Hypertension with dizziness and light-headedness due to Liver Yang Rising
5. Tonifies Kidney Yang
   Reproductive and urinary disorders such as impotence and incontinence
6. Aids fasting
   Mentioned in the Shen Nong Ben Cao Jing as part of the superior class of herbs which can, with protracted taking, make the body light and slow ageing. This may suggest it was part of supplementing the diet when engaging in an "avoiding grain" (Bigu 辟穀) fasting regime to cultivate life (Yangsheng 養生).

Standard Dosage: 10-15g in decoction.

Pinyin: Jiu  Chinese: 酒
Pharmaceutical: Alcohol
English: Rice Wine

Tastes: Hot, pungent, sweet, bitter, toxic
Meridians Entered: Stomach, Heart, Lung and Liver, but reaches every part of the body

Actions & Indications:

1. Nourishes and moves Blood and Qi, opens the Meridians
   Taken internally or applied topically as the medium for liniments in Blood stasis, especially from trauma or Bi syndromes in the elderly
2. Warms Yang and Expels Cold
   All Cold syndromes including Cold Bi, Interior Cold and Yang deficiency
   Often serves as the basis for longevity "elixirs" by soaking Yang tonifying herbs
3. Strengthens the Shen, dispels sorrow and promotes happiness
   Temporary low mood, celebration

Standard Dosage: 10-60ml, two to three times per day. Often combined with other herbs to bring out their Blood moving or warming aspects by washing them, or adding to a decoction, or soaking herbs in alcohol to make medicinal wines.
Cautions: Caution with Damp-Heat syndromes or long term consumption in the young and middle aged.

The Materia Dietetica (Shiwu Bencao 食物本草) by Lu He 卢和 from the Ming Dynasty says that excess drinking can hurt the spirit and consume blood, damage the stomach and deplete the body fluid, produce phlegm and induce fire.