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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Adv Drug Deliv Rev. 2012 Sep 6;64(14):1569–1578. doi: 10.1016/j.addr.2012.08.013

Figure 1.

Figure 1

(a) Schematic structure of the intestinal epithelium through which the oral drug has to pass across to reach the blood plasma. (b) The model concentration versus time profiles for conventional and controlled release drug delivery devices. Also shown are the model profiles demonstrating multiple pulsatile releases for different drugs that can be achieved using novel microfabricated multireservoir drug delivery devices.