Patch preparation containing an acid scavenger
First Claim
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1. A patch preparation comprising:
- a support;
an adhesive layer on one surface of the support;
wherein the adhesive layer comprises a basic medicament, a fatty acid-based ionic liquid, and potassium salts and/or potassium ions, the basic medicament comprises tizanidine or an acid addition salt thereof, and the fatty acid-based ionic liquid is a salt of tizanidine and a fatty acid.
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Abstract
An object of the present invention is to provide a patch preparation having an excellent skin permeability of medicament using an acid additional salt of basic medicament. Provided is a patch preparation comprising a support and an adhesive layer on one surface of the support, wherein the adhesive layer contains a basic medicament, a fatty acid-based ionic liquid, and potassium salts and/or potassium ions. Said potassium salts and/or potassium ions are generated as a result of reaction of an acid addition salt of the basic medicament with a compound capable of generating potassium ion in the adhesive layer.
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Citations
17 Claims
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1. A patch preparation comprising:
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a support; an adhesive layer on one surface of the support; wherein the adhesive layer comprises a basic medicament, a fatty acid-based ionic liquid, and potassium salts and/or potassium ions, the basic medicament comprises tizanidine or an acid addition salt thereof, and the fatty acid-based ionic liquid is a salt of tizanidine and a fatty acid. - View Dependent Claims (2, 3, 4, 7, 8, 9, 10)
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5. A composition for a patch preparation comprising:
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An acid addition salt of a basic medicament; a fatty acid-based ionic liquid; and a potassium ion generating compound, wherein the acid addition salt of the basic medicament is tizanidine hydrochloride and the fatty acid-based ionic liquid is a salt of tizanidine and a fatty acid. - View Dependent Claims (6, 11, 12)
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- 13. A method for forming a patch preparation, comprising forming an adhesive composition by mixing an acid addition salt of a basic medicament, a fatty acid, and a potassium ion generating compound in a polymer solution for forming an adhesive layer, wherein the acid addition salt of the basic medicament is tizanidine hydrochloride.
Specification