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 systemsThis question was addressed to me in an online quiz.I'm obligated to ask this question of Biopharmaceuticals in chapter Biopharmaceuticals of Drug Biotechnology

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

1.	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 systemsThis question was addressed to me in an online quiz.I'm obligated to ask this question of Biopharmaceuticals in chapter Biopharmaceuticals of Drug Biotechnology
Answer» 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.

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