Which of the following oral controlled release system is shown in the picture?(a) Matrix system(b) Encapsulated system(c) Rigid matrix(d) Swellable matrixThe question was posed to me in an online quiz.This intriguing question originated from 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) Matrix system(b) Encapsulated system(c) Rigid matrix(d) Swellable matrixThe question was posed to me in an online quiz.This intriguing question originated from Biopharmaceuticals in chapter Biopharmaceuticals of Drug Biotechnology
Answer» The correct ANSWER is (b) Encapsulated system Explanation: The drug PARTICLES are encapsulated with slowly dissolving particles such as cellulose, PEG, waxes etc. The resulting pellets MAY be filled in hard gelatin capsules or compressed into tablets. The DISSOLUTION RATE of the coat depends upon the solubility and thickness of the coating.

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