Watermelon frost

Watermelon frost

(complete collection of selected doctors)

Another name: watermelon nitrate.

[source] it is white crystal made from watermelon skin and nitrate.

[preparation method] ① select the unripe watermelon skin, cut it into small pieces, add 15 Jin of nitrate per 10 jin, mix well, and put it into a yellow sand jar. First, lay a layer of watermelon skin as a cushion at the bottom of the jar. After the melon skin is full, lay another layer of watermelon skin on the top, and place the cylinder head in a ventilated place. After a few days, there is white frost on the outside of the yellow sand jar. Sweep the frost gently until the frost is completely separated. Sweep down the white frost, pick up the sand, that is pure watermelon frost.

② Choose a watermelon weighing about 6-7 Jin, cut it at the pedicel, dig out part of the flesh, fill it with 1 jin (or more) of sodium nitrate, then cover the cut peel, nail it firmly with bamboo stick, and hang it in a cool and ventilated place. After about 10 days, white frost will continuously precipitate from the outside of the peel, and then sweep the frost down one after another.

The watermelon cream should be stored in lime jar or sealed in porcelain bottle in a cool and dry place to prevent moisture and heat.

[medicinal material] is a white powder granular crystal, which looks like coarse salt and melts when heated. It is better to be white, pure and free of mud and impurities.

[flavor] salty, cold.

Ben Cao Zai Xin: "it is pungent in taste, flat in nature, and has little poison. "

[Guijing] Bencao Zaixin: "entering the spleen and lung meridians. "

[function and indications] it is used to treat laryngopathy, laryngitis, aphthous ulcer, chancre, chronic cough and sore throat.

① "Yangyi Daquan": "for the treatment of pharynx, throat and mouth, double moth throat obstruction. "

② "Bencao Zaixin": "treating throat obstruction for a long time. "

[usage and dosage] external use: grind powder and blow throat. Oral administration: pour into the decoction.

[prescription selection] 1. It can cure all throat syndromes, such as swelling, pain, white rot, inflammation and swelling: watermelon frost, xiyueshi, cinnabar, Bombyx Batryticatus and borneol. Grind very fine powder, blow the affected area. Yin deficiency and diphtheria should not be used. (the jade key of the summary of the treatment of laryngeal Sha)

② Treatment of diphtheria: Watermelon Frost Two, people white one money (calcined), cinnabar two money, androgen two, borneol one money. Research together fine end, again milk silent, if not diphtheria, subtract androgen. (Guashuang powder in Zhihou jieyao)