Oral powder refers to the powder used directly for oral administration. Cooking powder refers to the oral administration of powder when cooked with water and administered together with the solution.
Decocted powder refers to the administration of powder after being decocted. with the solution administered after filtration with the residue discarded. Topical powder is the powder form used directly for local application.
The production and storage of powder should follow this way:
The tibetan materia medica used in powder form should all be pulverized.The methods of pulverization vary with the different quality of crude drugs inthe recipes. There are three methods for pulverization.
Total pulverization, also called mixed pulverization: Mix all the tibetan medicine ingredients together and then pulverize by mechanical or manual methods.
Ball mill: This method is applied when the ingredient needs an especially fine powder form. There are dry ball mill and wet ball mill. For dry mill, first pulverize the ingredients to certain size, then put it into a mill and pulverize to a very fine powder. For wet mill, put all ingredients into a mill and add water, pulverizing it very fine, finally allowing the wet powder to dry. This method can't be applied for ingredients that are insoluble in water.
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