会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明专利
    • Sustained-release tablet comprising pramipexole
    • NZ562495A
    • 2009-03-31
    • NZ56249503
    • 2003-07-25
    • PHARMACIA CORP
    • NOACK RAINERREO JOSEPH PAMIDON GREGORY EGANORKAR LOKSIDH DHEIMLICH JOHN MLEE ERNEST JSKOUG CONNIE J
    • A61K31/513A61K31/428A61K9/20A61K9/28A61K31/4745A61K31/5375
    • A method for determining suitability of a starch for use in a sustained-release orally deliverable tablet comprising an active pharmaceutical agent, having solubility not less than about 10 mg/ml is disclosed, wherein the method comprises the steps of: (a) preparing compacts of a sample of the starch on an automated tablet press at a range of compression forces applied for a dwell time of at least about 4 seconds; (b) measuring hardness of each compact, expressed as the force required to cause crushing of the compact; (c) determining solid fraction of each compact; (d) calculating tensile strength of each compact from the equation given in the specification; (e) establishing relationship of tensile strength to solid fraction of the compacts; and (f) using said relationship to estimate tensile strength at a solid fraction representative of a desired sustained-release tablet; the starch being deemed suitable for said use if its tensile strength as so estimated is at least about 0.15 kN cm-2. Also disclosed is a process for preparing a sustained-release pharmaceutical composition in a form of an orally deliverable tablet comprising an active pharmaceutical agent which is pramipexole or a salt thereof, the process comprising selecting by a suitable test a starch having a tensile strength of at least about 0.15 kN cm-2 at a solid fraction representative of the tablet; admixing with the selected starch a hydrophilic polymer and pramipexole or a salt thereof to provide a mixture wherein the agent is dispersed in a matrix comprising the polymer and the starch; and compressing the mixture to form said tablet.