Oral Controlled Systems Flashcards
List the oral controlled systems
What is the matrix system
In the matrix system the drug is dispersed in what
In matrix system the drug release rate is controlled by what
By the type and proportion of polymer used in the preparations
What are the types of matrix system
Hydrophobic matrices
Lipid matrices
Hydrophilic matrices ( swellable controlled release systems )
Explain the hydrophobic matrices
Mentioned what is the sustained release produced due to and the rate controlling step
The mechanism of drug release don hydrophobic matrices is what
Diffusion
Explain lipid matrices
Where are Hydrophilic matrices (swellable controlled release systems ) used in
Explain Hydrophilic matrices
Explain the mechanism of the swellable controlled release system
Explain the reservoir system
What is the drug release rate controlled by in the reservoir systems
What is the mechanism of action of reservoir system
In reservoir system the release pattern Is what
Diffusion controlled
Explain the membranes in the reservoir systems
What is an advantage of reservoir system
Explain osmotic system
What are the components of osmotic systems
Core (drug + osmotic agent)
Semi permeable membrane
Delivery orifice
Explain the core component of osmotic system
Explain the semi permeable membrane component of the osmotic system
Explain the delivery orifice component of the osmotic system
What is the difference between diffusion based systems and osmotic system
Explain the Single compartment osmotic system
Explain the multi compartment osmotic system
Explain the water influx mechanism of osmotic system
Explain the osmotic pressure generation mechanism of osmotic system
Explain the controlled drug release mechanism of osmotic system
Explain ion exchange complexes and their characteristics
Explain the ion exchange resin component of the ion exchange complexes
Explain the drug ion complex (rasinate) component of the Dion exchange simplexes
Explain the GI fluids component of the ion exchange complexes
Explain the binding of drug to resin mechanism of ion exchange complexes
Explain the ion exchange process in GI fluid tract mechanism of ion exchange complexes
Explain the controlled drug release mechanism of ion exchange complexes
Explain the floating system
What is the goal of the floating system
Explain the low density materials components of the floating system
Explain the hydrocolloid gel formation components of the floating system
Explain the gas generating agents components of the floating system
Explain the mechanism of action of the floating system
Explain the multi particular systems
Explain the multiple drug units component of the multi particulate system
Explain the coating or encapsulation component of the multi particulate systems
Explain the mechanism of action of multi particulate systems
