【発明の名称】複数層の制御放出処方剤 - Aventis Pharmaceuticals Incorporated

Title:

【発明の名称】複数層の制御放出処方剤

Document Type and Number:

Japanese Patent JP3426230

Kind Code:

B2

Abstract:

Controlled release pharmaceutical beads are provided having a multi-layered core and a multi-layered periphery. The core contains at least (A) an inner portion having a suitable organic acid and (B) a sustainably-acid-releasing coating thereover. The periphery contains at least (A) an inner portion having a mixture of at least (i) a pharmaceutical compound and (ii) a surface-active agent, and (B) a sustainably-drug-releasing exterior coating.

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Inventors:

Kazuo Noda
Kousuke Yoshino
Yoshiyuki Hirakawa
McLaren, David, Dee.
Skartetie, Paul, F.
Leffler, John, Earl.
Beck, Greg, M.

Application Number:

JP50028993A

Publication Date:

July 14, 2003

Filing Date:

May 20, 1992

Export Citation:

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Assignee:

Aventis Pharmaceuticals Incorporated
Tanabe Pharmaceutical Co., Ltd.

International Classes:

A61K9/50; A61K9/54; A61K9/58; A61K31/554; A61K47/12; A61K47/20; A61K9/52; A61P9/12; (IPC1-7): A61K9/52; A61K31/554; A61K47/12; A61K47/20; A61P9/12

Domestic Patent References:

JP56103111A
JP63227519A
JP5315411A
JP37238A

Attorney, Agent or Firm:

Katsuro Sasai

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