1 Powders 1.1 Definition Powders are mixtures of dry, fine, divided drugs and/or chemicals that may be intended for internal (oral)or external(topical) use May be intended for internal use or external use, but most frequent use is external Use as a dosage form is limited but use in preparation of other dosage forms is extensive1. Powders 1.1 Definition Powders are mixtures of dry, fine, divided drugs and/or chemicals that may be intended for internal (oral) or external (topical) use. • May be intended for internal use or external use, but most frequent use is external. • Use as a dosage form is limited, but use in preparation of other dosage forms is extensive