Drug name: Calamine
Nicknames: Sheep Liver Stone, Floating Water Gan Stone
Source: "Outer Pill Materia Medica"
Classification: Detoxification, saprophytic and myogenic drugs
Origin: Guangxi, Sichuan, Yunnan and other regions
Sex and taste: mild in nature, sweet in taste
Meridian return: liver and spleen meridians return
Effect: Brighten the eyes and remove haze, reduce dampness and relieve itching, astringe sores and promote muscle growth
Indications: redness, swelling and pain in the eyes, erosive wind eye, excessive tear and fear of light, pterygium on the iris, non converging ulcers, wet sores on the skin, and itching in the genital area
Character identification
Ganshi (sphalerite) is a block or stalactite aggregate that appears in an irregular block shape. White, grayish white or light earthy yellow, with streaks of grayish white and light brown. Some surfaces have depressions or multiple pores, resembling honeycomb like structures. Earthy luster, opaque, lightweight, hard and brittle in texture, with a fragile cross-section of white or light earthy yellow, and some yellow and white alternating like patterns. Odorless and slightly astringent in taste. It is better to have a white color and a light and loose body.
Usage&Notes
External use: In moderation, water flies to the eyes, grind and sprinkle or adjust.
Attention: It is recommended to use it for external use after processing, specifically for external use, not for internal use.
chemical composition
The main component of calamine is zinc carbonate, which contains a small amount of 0.27% calcium oxide, 0.45% magnesium oxide, 0.58% iron oxide, and 0.01% manganese oxide. Zinc is often replaced by a small amount of iron (divalent), and some also contain small amounts of cobalt, copper, cadmium, lead, and trace amounts of germanium and indium. The calamine from Qingdao and Jinan contains small amounts of impurities such as iron, aluminum, calcium, magnesium, and extremely trace amounts of sodium.
pharmacological action 
Calamine is used to treat skin inflammation or surface trauma. It can partially dissolve and absorb the secretion of the wound, and converge. It can also drive away local Staphylococcus and limit its reproduction, and has good anti-inflammatory and analgesic effects.
Chinese herbal formula
1. Incompatible treatment for leakage ulcers: children's urine made with calamine and oyster powder. Externally inserted; Take nourishing medicine internally. (Miscellaneous Disease Treatment Examples)
2. Treatment of sudden redness and swelling in the eyes: calamine (calcined by fire, quenched by urine), weathered and eliminated, etc., divided into the end. A little bit of new hydration. (Prescriptions of the Imperial Medicine Academy)
Ancient book records
The Encyclopedia of Materia Medica: Spotting damp and swollen eyelids and scrotum.
Compendium of Materia Medica: Tonglong Brain Point, treats all diseases in the eye.
"De Pai Ben Cao": De Zhen clam powder, puffing up yin, sweating, and itching; Paired with children's tea, apply chancre, and treat genital ulcers.