Question

Which of the following oral controlled release system is shown in the picture?

(a) Oral osmotic pump

(b) Reservoir device

(c) Hydrodynamic pressure controlled system

(d) Altered density systems

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I'm obligated to ask this question of Biopharmaceuticals in chapter Biopharmaceuticals of Drug Biotechnology

Answer 1

Right choice is (a) Oral osmotic pump

Explanation: An oral osmotic pump works on the principle of osmotic pressure to release drug at a constant zero order rate. The core comprises of the drug and osmotically active substances such as potassium chloride or mannitol. This is again surrounded by a rigid semi permeable membrane coating such as cellulose ester.