Large-leaf gentian root (Qinjiao)
Pharmaceutical Name: Radix Gentianae macrophyllae
Botanical Name: 1. Gentianamacrophylla pall.; 2. Gentiana crassicaulis Duthie ex Burkill; 3. Gentiana dahurica Fisch.; 4. Gentiana straminea Maxim.
Common Name: Large-leaf gentian root
Source of Earliest Record: Shennong Bencao Jing
Part Used & Method for Pharmaceutical Preparations: The roots are dug in spring or autumn. After the fibrous root bark has been removed, the roots are cleaned, dried in the sun and cut into slices.
Properties & Taste: Bitter, pungent and slightly cold
Meridians: Stomach, liver and gall bladder.
Functions: 1. To dispel wind and dampness; 2. To clear heat caused by yin deficiency
Indications & Combinations:
1. Wind-damp obstruction syndrome: a) pain with heat signsLarge-leaf gentian root (Qinjiao) is used with Tetrandra root (Fangji) and Honeysuckle stem (Rendongteng); b) pain with cold signsLarge-leaf gentian root (Qinjiao) is used with Notopterygium root (Qianghuo), Pubescent angelica root (Duhuo), Cinnamon twigs (Guizhi) and Prepared aconite root (Fuzi).
2. Afternoon fever caused by deficient yin. Large-leaf gentian root (Qinjiao) is used with Sweet wormwood (Qinghao), Turtle shell (Biejia), Anemarrhena rizome (Zhimu) and Wolfberry bark (Digupi) in the formula Qinjiao Biejia Tang.
3. Damp-heat jaundice. Large-leaf gentian root (Qinjiao) is used with Oriental wormwood (Yinchenhao) and Capejasmine (Zhizi).
Dosage: 5-10 g
Cautions & Contraindications: This herb is contraindicated for a person with a weak constitution or in cases suffering from diarrhea.
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