The efficacy and function of green leaf gall

Everyone is familiar with green leaf gall, of course some people are relatively unfamiliar with it. In fact, green leaf gall is a relatively common Chinese medicinal material. So what exactly does green leaf gallbladder do?

【English name】 HERBA SWERTIAE MILEENSIS

[Other names] Qingyedan, Qingyu gallbladder, gallbladder medicine, hepatitis grass

[Source] This product is the dried whole herb of Swertia mileensis TN He et WL Shi, a plant of the Gentianaceae family. Harvest in autumn during the flowering and fruiting period, remove the mud and sand, and dry in the sun.

【Properties】 This product is 15 to 45 cm long. The roots are oblong-conical, 2 to 7 cm long and about 0.2 cm in diameter. Some have branches; the surface is yellow or yellow-brown. The stem is quadrangular, with extremely narrow wings at the corners, 0.1 to 0.2 cm in diameter; the surface is yellow-green or yellow-brown, the lower part is often reddish purple, and the cross section is hollow. Leaves are opposite and sessile; leaves are mostly wrinkled or broken, and intact leaves are strip-shaped or narrowly lanceolate when flattened, 1 to 4 cm long and 0.2 to 0.7 cm wide. Conical cyme, 4 sepals, linear, yellow-green; 4 corollas, deeply lobed, yellow, lobes ovate-lanceolate, with 2 glandular pits at the inner base; 4 stamens. The capsule is narrowly ovate, with many small, brown seeds. It has a faint smell and a bitter taste.

【Identification】 (1) The powder of this product is green or yellow-green. The stone cells are round, rectangular, long or fusiform, some with protrusions or one end extended, 100-120 μm long, 40-50 μm in diameter, lignified, with a wall thickness of 5-10 μm and obvious pores. The fibers are long and fusiform, 180-220 μm long, 8-10 μm in diameter, lignified, with a wall thickness of about 2.5 μm and obvious pores. The cell walls of the upper epidermis of the leaves are wavy; the cuticle texture of the lower epidermis cells is not very obvious, and the stomata are numerous, unequal or indefinite. Calcium oxalate crystals are rod-shaped, needle-shaped or flake-shaped, and are mostly found in mesophyll cells. Pollen grains are round, 30-37 μm in diameter, with 3 pores and grooves, and a fine reticular texture on the surface.

[Preparation] Remove impurities, spray with clean water, moisten slightly, cut into sections, and dry.

【Nature and flavor】 Bitter, sweet, cold.

[return through] return liver, gallbladder and bladder meridians.

【Functions and indications】 Clears the liver and promotes bile secretion, clears heat and removes dampness. Used for jaundice, red urine, hot and painful stranguria.

【Usage and Dosage】 10-15g.

【Note】 Those with cold deficiency should take with caution.

【Storage】Keep in a cool and dry place.

【Excerpt】 Chinese Pharmacopoeia

【Source】 Yunnan Chinese Herbal Medicine

The above is an introduction to some relevant knowledge about green leaf gall. Do you have a better understanding of it? I hope everyone can apply Qingyedan ​​in their lives to serve our health.