The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 14, 2010

Filed:

Aug. 27, 2004
Applicants:

Akio Sugihara, Shizuoka, JP;

Katsuhiro Masaki, Shizuoka, JP;

Takehiko Yasuji, Shizuoka, JP;

Inventors:

Akio Sugihara, Shizuoka, JP;

Katsuhiro Masaki, Shizuoka, JP;

Takehiko Yasuji, Shizuoka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

This invention is aimed to provide a stabilized formulation of ramosetron or a pharmaceutically acceptable salt thereof under a temperature/humidity condition, especially at a low content and relates to a stable oral solid drug composition of ramosetron or a pharmaceutically acceptable salt thereof, which is characterized by containing one or two or more members selected from the group consisting of an aliphatic carboxylic acid or an ester thereof, a hydroxycarboxylic acid or an ester thereof, an acidic amino acid, an enolic acid, an aromatic carboxyl compound or an ester thereof, and a carboxyl group-containing high-molecular substance, and to a stabilization method of the same. Also, this invention relates to a therapeutic agent of diarrhea-predominant irritable bowel syndrome containing from 0.002 to 0.02 mg of ramosetron hydrochloride as a daily dose or an equivalent molar amount of ramosetron or its pharmaceutically acceptable other salt as an active ingredient.


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