raw lacquer

raw lacquer

(Ben Jing)

[source] it is the resin of lacquer tree. Please refer to "dry paint" for plant morphology.

[collection] harvest from April to May. Cut the bark, take the spilled fat and store it.

[chemical composition] the resin contains 50-80% urushiol, which is a mixture of four catechol derivatives (I, II, III, IV). Urushiol IV accounted for 50%. Urushiol is toxic and can cause strong blistering and allergic dermatitis. Laccase, galactose, glucuronidase, laccase and laccase were the main components.

[pharmacological action] contact with lacquer can cause severe allergic dermatitis in some special people.

Tao Hongjing: "it's very poisonous. "

[function indications] it can cure insect accumulation and water poison.

① Ben Jing: "go to the worm. "

② According to the book of Ben Jing Feng Yuan, it is the most effective way to break blood if you use real lacquer to coat mud carp. "

[usage and dosage] oral administration: raw use and pill, or boil dry and grind powder into pill and powder. External use: coating.

[should avoid] it is forbidden to take it when the body is deficient and stagnant.

[formula selection] ① for hookworm disease: raw lacquer is wrapped with rice as big as soybean, and swallow one grain at a time. (Hunan medical records)

② Water control poison: a jin of genuine lacquer (dissolved in the pot, twisted with hemp cloth to remove the residue, and then dried in the pot), a jin of realgar. For the end, vinegar paste pill Wuzi big, every four, big malt decoction. (Introduction to medicine, Qixiong pill)