Tzuchi Rob Ju Yihong

Abbott Laboratories North Chicago, Illinois

4.1 Diffusion Theory

4.1.1 Basic equations of diffusion

4.1.2 Diffusional release from a preloaded matrix

4.1.3 Diffusion across a barrier membrane

4.2 Oral Diffusion-Controlled Systems

4.2.1 Matrix systems

4.2.2 Reservoir systems

4.2.3 Current challenges and future trends

4.3 Transdermal Diffusion-Controlled Systems

4.3.1 Drug-in-adhesive systems

4.3.2 Semisolid matrix systems

4.3.3 Reservoir systems

4.3.4 Current challenges and future trends

4.4 Other Diffusion-Controlled Systems

4.4.1 Intrauterine devices and intravaginal rings

4.4.2 Intraocular inserts

4.4.3 Subcutaneous implants References

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