Asymmetric membrane capsule explained

The asymmetric membrane capsule is an example of a single core osmotic delivery system, consisting of a drug-containing core surrounded by an asymmetric membrane made with a non disintegrating polymer (cellulose acetate, ethylcellulose etc.).^{[1] [2]}

Notes and References

1. 10.1016/j.ijpharm.2005.03.026. Asymmetric membrane capsules for delivery of poorly water-soluble drugs by osmotic effects. 2005. Wang. Chun-Yu. Ho. Hsiu-O. Lin. Ling-Hong. Lin. Ying-Ku. Sheu. Ming-Thau. International Journal of Pharmaceutics. 297. 1–2. 89–97. 15885936.
2. 10.1016/j.ejpb.2007.12.011. Asymmetric membrane in membrane capsules: A means for achieving delayed and osmotic flow of cefadroxil. 2008. Philip. Anil K.. Pathak. Kamla. Shakya. Pragati. European Journal of Pharmaceutics and Biopharmaceutics. 69. 2. 658–666. 18206358.