| abstract |
The present invention provides a kind of method for being used to prepare drug, the drug is capable of providing the controlled and sustained release of drug.Specifically, drug will be discharged to intracorporal specific organization region.The method includes but be not limited to provide have open end impermeable shell, the drug granule of compression is put into the impermeable shell, the open end of impermeable shell permeable layer is applied coated with the release window for generating the drug, to provide the controlled and/or sustained release of the drug. |