| Health / Medical Topics |
Diffusion Controlled Extended Release Dosage Form
A solid, semi-solid, solution or suspension covered with an outer permeable polymeric membrane designed to release active and/or inert ingredient(s) at a controlled, prolonged rate so as to reduce dosing frequency. Water permeates through the membrane to the core to dissolve the ingredient(s) which subsequently exit the membrane at a rate determined by their solubility and the thickness and porosity of the membrane. (NCI Thesaurus)
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