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Pharmaceutics
Evaluation of Oral Solid Dosage forms
17
Biology
Graduate
02/01/2012

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Term
quality testing for all products
Definition
-appearance
-potency (assay)
-stability
Term
potency
Definition
-90-110% of label claim
Term
uniformity
Definition
-content of drug substance in the individual tablet/capsule
Term
CU
Definition
content uniformity
Term
weight variation
Definition
for products with greater than 25mg strength
and greater than 25% drug loading
Term
hardness
Definition
-F required to fracture
Term
friability
Definition
weight loss after 10 rotations
Term
IR products should disintegrate in
Definition
15 to 30 min
Term
fixed value
Definition
-solubility
Term
dissolution
Definition
-describes a rate and multiple factors
Term
dissolution
Definition
-dissolve in solution
-dissolve into bulk (rate limiting)
Term
Noyes-Whitney Equation
Definition
DA (Cs-Ct)/h
Term
area factors
Definition
disintegration,particle size,wetting
Term
Diffusion coefficient factors
Definition
MW and medium viscosity
Term
Cs factors
Definition
solvent temp pH crystallinity
Term
Ct factors
Definition
medium volume and drug removal
Term
h
Definition
stagnant layer, thickness
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