It has the effects of nourishing heart, calming nerves, expelling wind and dredging collaterals. Can be used for insomnia, dreaminess, blood deficiency, body pain, skin numbness, rheumatalgia, rubella itching.

Medicinal material properties:

The rattan stems are long and cylindrical, slightly twisted, with different lengths, 3-7 mm in diameter, brown or brown on the surface, rough, with obvious twisted longitudinal wrinkles and small round lenticels. The node is slightly enlarged and marked with branches. The skin is thin and can be peeled off. Brittle and easily broken, the skin is reddish brown, the wood is yellowish, the catheter hole is obvious, and there is a white loose pith in the center.

No gas, slightly bitter. It is best to have thick and even branches and brown skin.

Extended data

Microscopic identification

Cross section of stem: Cork layer is a series of cells containing brown pigment. The cortex is thin. The fiber bundles of stele sheath are arranged in a ring-shaped discontinuous manner, accompanied by a small number of stone cell groups, and the fiber walls are thick and lignified. The phloem is wide and the cambium in the bundle is obvious; Xylem vessels are scattered separately or gathered together. The pulp is very small. The parenchyma cells contain calcium oxalate clusters.

Chemical composition: the vine stem contains emodin, and emodin methyl ether A is emodin -8-β-D- glucopyranoside and β-sitosterol. It also contains Polygonum multiflorum Thunb acetyl glycoside.

Baidu encyclopedia-Polygonum multiflorum Thunb