CN Patent

CN115869277A — 一种左乙拉西坦缓释片及其制备方法

Assigned to Wanquan Wante Pharmaceutical Jiangsu Co ltd · Expires 2023-03-31 · 3y expired

What this patent protects

左乙拉西坦的延长释放药物组合物，每日剂量制度和制备它的过程。采用不溶性骨架材料作为骨架载体，制备左乙拉西坦缓释颗粒，再将缓释颗粒以适当的压力压成圆形片，最后进行包衣，包衣增重在2％～5％之间。它通过消除患者血浆中的药物浓度的槽和药物浓度的谷物和峰值。本发明本发明制备的左乙拉西坦缓释片，工艺稳定，能很好起到缓释的作用，16h内的释放稳定，无突释和难以溶出的现象出现。

USPTO Abstract

左乙拉西坦的延长释放药物组合物，每日剂量制度和制备它的过程。采用不溶性骨架材料作为骨架载体，制备左乙拉西坦缓释颗粒，再将缓释颗粒以适当的压力压成圆形片，最后进行包衣，包衣增重在2％～5％之间。它通过消除患者血浆中的药物浓度的槽和药物浓度的谷物和峰值。本发明本发明制备的左乙拉西坦缓释片，工艺稳定，能很好起到缓释的作用，16h内的释放稳定，无突释和难以溶出的现象出现。

Drugs covered by this patent

Patent Metadata

Patent number
CN115869277A
Jurisdiction
CN
Classification
—
Expires
2023-03-31
Drug substance claim
No
Drug product claim
No
Assignee
Wanquan Wante Pharmaceutical Jiangsu Co ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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