Controlled release dosage form of ibuprofen which was layered by talc with ethylcellulose binder

We studied the controlled release dosage form of ibuprofen which was layered by talc with an ethylcellulose (EC) binder. In this dosage form, the amount of EC was variable in the range of 4.1-6.0 g according to the operating conditions (e.g. slit air temperature), However the release rate of ibuprofen was changed according to these conditions, It was, therefore, difficult to assure the reproducible productivity of sustained-release granules of ibuprofen. We designed formulations of EC binder solutions; EC-ethanol, EC-ethanol-water and EC-ethanol-water-hydroxypropylmethylcellulose (HPMC), and investigated the release rate of ibuprofen which was prepared by each formulation. The results showed that the release rate of ibuprofen was not changed in the range of 4.2-10.3 g of the amount of EC used in the EC-ethanol-water HPMC formulation.