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. 2021 Sep 30;13(10):1591. doi: 10.3390/pharmaceutics13101591

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Scanning electron microscopy (SEM) images demonstrating the porous structure of the gastroretentive sponges before (a) and after (b) compression. The compression did not seem to damage the porous structural framework of the sponges which most likely accounted for their zero floating lag time. Reprinted from International Journal of Pharmaceutics Vol 472, Tadros and Fahmy, Controlled-release triple anti-inflammatory therapy based on novel gastroretentive sponges: Characterization and magnetic resonance imaging in healthy volunteers, Pages 27–39, Copyright 2014, with permission from Elsevier.