Characteristics of traditional Chinese medicine powder

The characteristics of gunpowder have long been discussed in ancient times: "Those who are scattered will also be scattered for emergency use." Because of its large specific surface area, the powder has the characteristics of easy dispersion and quick effect; Powder can produce certain mechanical protection; In addition, the preparation method is simple, and the dosage can be increased or decreased according to symptoms. When eye pills, tablets, capsules and other dosage forms are inconvenient, powder can be used instead. However, due to the large specific surface area of the drug after crushing, its odor, irritation, hygroscopicity and chemical activity also increase accordingly, which makes some drugs easy to change; Volatile components are easily lost. Therefore, some drugs with strong corrosiveness and moisture absorption deterioration should not be made into powder.