Gold does not change, acacia labiatae. These plants are distributed in Jiangsu, Anhui, Fujian, Guangxi, Zhejiang, Guangdong and other provinces in China.

Gold is an annual erect herb with full fragrance, square stem, multi-branched upper part and usually purple-green and pilose surface; Leaves opposite, ovate or ovate-lanceolate, base cuneate, margin sparsely serrate or entire; Cymes are terminal and arranged in discontinuous racemes, and each cyme has 6 or more flowers.

Annual erect herb, fragrant, 20 ~ 70 cm high. The stem is square, the upper part is multi-branched, and the surface is usually purple-green and pilose. Distributed in Jiangsu, Anhui, Fujian, Guangxi, Zhejiang, Guangdong and other provinces.

The effect of gold without exchange:

It has the effects of sweating, relieving exterior syndrome, expelling pathogenic wind, promoting diuresis, removing blood stasis and relieving pain. It has the functions of expelling wind, relieving cough, expelling wind and penetrating exterior, and can be used for treating common cold, wind-heat cough and measles.

1. Analgesic, hypnotic and sedative effects: ethanol extract, total alkaloids, non-phenolic alkaloids and extracted crystals all have obvious analgesic effects, but phenolic alkaloids are ineffective. L-tetrahydropalmatine 5 mg/kg can significantly relieve pain, and its sedative and hypnotic effects are the same as those of Corydalis yanhusuo. See corydalis yanhusuo.

2. Effects on respiration and blood pressure: intraperitoneal injection of L-tetrahydropalmatine 1.5 ~ 80 mg/kg in anesthetized dogs has no obvious effect on respiration, and low dose has no obvious effect on blood pressure, but high dose reduces it.