Aqueous liquid
JP2026096220APending Publication Date: 2026-06-15SENJU PHARMA CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SENJU PHARMA CO LTD
- Filing Date
- 2024-12-03
- Publication Date
- 2026-06-15
AI Technical Summary
Technical Problem
Existing aqueous solutions containing epinastine and/or its salts exhibit pH instability under light or heat exposure, which is not adequately addressed by conventional formulation technologies.
Method used
An aqueous solution comprising epinastine and/or its salt and monoethanolamine and/or its salt, with a pH of 7.5 or higher, which enhances pH stability against light and heat exposure.
Benefits of technology
The solution effectively suppresses pH changes due to light or heat exposure, maintaining stability within a pH range of 0.4 or less, even after exposure to high illuminance or storage at elevated temperatures.
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Smart Images
Figure 2026096220000001 
Figure 2026096220000002
Abstract
The object of the present invention is to provide a liquid formulation technology relating to an aqueous liquid formulation containing epinastine and / or a salt thereof. [Solution] An aqueous solution comprising epinastine and / or a salt thereof, and monoethanolamine and / or a salt thereof, with a pH of 7.5 or higher.
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