CLASSIFICATION OF POWDERS

 

1.According to the division into prescribed doSE

BULK POWDER

All doses are given inseparably (as a bulk). They may be classified as
oral powders  e.g., antacid and laxative powders          
dentifrices         e.g tooth powders
DUSTING POWDERS   i.e.locally applied nontoxic preparations. Commercial dusting powders are available in sifter-top containers and pressure aerosols.
INSUFFLATION   finely divided powders introduced into body cavities (ears, nose, throat) with a powder blower (insufflator). Specialized equipment has been developed for the administration of micronized powders of relatively potent drugs (e.g., pressure aerosols)

DIVIDED DOSE POWDERS

These are divided into the prescribed number of doses and are given orally. Each individual dose (0.1–1.0 g) should be transferred to a powder paper

2.   According to the composition:

 Simplex powders; consist of one active ingredient and suitable inert substances (constituents)

      Complex powders ; are mixtures of more than one active ingredient and constituents.

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