Dusting powders are solid bulk dosage
form which are taken
Internally
Orally
Inhalation
Externally
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TYPES OF DOSAGE FORMS:
Definition: Dosage forms are the means ( or the form ) by which drug
molecules are delivered to sites of action within the body.
The need for dosage forms:
1- Accurate dose.
2- Protection e.g. coated tablets, sealed ampules.
3- Protection from gastric juice.
4- Masking taste and odour.
5- Placement of drugs within body tissues.
6- Sustained release medication.
7- Controlled release medication.
8- Optimal drug action.
9- Insertion of drugs into body cavities (rectal, vaginal)
10- Use of desired vehicle for insoluble drugs
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