Large-leaf gentian root (Qinjiao)
Gentiana macrophylla pall.
Pharmaceutical Name: Radix Gentianae
macrophyllae.
Botanical Name: 1. Gentiana macrophylla 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).
4. For rheumatic or rheumatoid arthritis
with muscular contracture and severe joint pain, it is used with Radix Aristolochiae Fangchi (Fang Ji),
Radix Angelicae Pubescentis (Du Huo), and others.
Dosage: 5-10 g, decocted in water for
an oral dose.
Cautions & Contraindications: This
herb is contraindicated for a person with a weak constitution or in cases
suffering from diarrhea.
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