Ion Exchange Resins as Carriers for Sustained Drug Release

Abstract

Ion exchange resins are water-insoluble cross-linked polymers conventionally used in chemical engineering to separate and purify substances from fluid mixtures and for the separation of gases. They are used in the pharmaceutical industry as a carrier for controlled drug delivery systems. Sustained drug release involves the release of the drug at a predetermined rate into the target system and helps maintain a constant drug concentration for a specified period. At present ion-exchange resins are widely studied and used as drug-delivery agents. Ion-exchange fibers are shought as an alternative due to their better efficiency in drug loading and delivery.