Lactic acid-induced modifications in films of Eudragit RL and RS aqueous dispersions.

Abstract

Eudragit RL (ERL) and RS (ERS) are polymethacrylate co-polymers, used in film coating of sustained release dosage forms, possessing some hydrophilic properties due to the presence of quaternary ammonium groups (QAG), where ERL contains more of such groups, hence more permeable, than ERS. However, because these groups ionize in solution, they undergo… (More)

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Cite this paper

@article{Omari2004LacticAM, title={Lactic acid-induced modifications in films of Eudragit RL and RS aqueous dispersions.}, author={Derar M. Omari and Asmaa Sallam and Ahmed Abd-elbary and Mohamed S El-Samaligy}, journal={International journal of pharmaceutics}, year={2004}, volume={274 1-2}, pages={85-96} }