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Modified-Release Drug Delivery Systems: Rate-Programmed II

Modified-Release Drug Delivery Systems: Rate-Programmed II

Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...

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Related Experiment Video

Updated: Jul 2, 2026

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

Controlled release solid dosage forms using combinations of (meth)acrylate copolymers.

Diego Gallardo¹, Brigitte Skalsky, Peter Kleinebudde

¹EVONIK Industries, Pharma Polymers, Kirschenallee, Darmstadt, Germany. diego.gallardo@evonik.com

Pharmaceutical Development and Technology

|August 23, 2008

Summary

This summary is machine-generated.

Controlled release oral dosage forms utilize (meth)acrylate copolymers for sustained drug delivery. Combining these polymers creates unique release profiles, with analytical methods identifying polymer interactions for optimized drug formulations.

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Area of Science:

Pharmaceutical Technology
Polymer Science
Drug Delivery Systems

Background:

Controlled release solid oral dosage forms offer comfort and reproducible drug release.
(Meth)acrylate copolymers are versatile polymers for designing sustained release formulations.
Polymer properties like electrical charge and pH-dependent solubility influence release profiles.

Purpose of the Study:

To review studies on (meth)acrylate copolymer combinations in oral drug delivery.
To explore how polymer combinations modify drug release patterns.
To highlight analytical methods for detecting polymer interactions.

Main Methods:

Literature review of studies on (meth)acrylate copolymer systems.
Analysis of research on multi-unit systems and matrix tablets.
Examination of analytical techniques for polymer interaction identification.

Main Results:

Combinations of (meth)acrylate copolymers can achieve diverse drug release profiles.
Electrical characteristics and pH-dependent solubility significantly impact release patterns.
Various analytical methods are available to study polymer interactions in these systems.

Conclusions:

Combining (meth)acrylate copolymers offers tailored drug release for oral dosage forms.
Understanding polymer interactions is crucial for developing effective sustained release formulations.
Further research utilizing analytical methods can optimize these advanced drug delivery systems.