Hisamitsu Pharmaceutical Company, Inc.

Toshiro Yamaguchi

Naruhito Higo

Tetsuro Tateishi

Takashi Yasukochi

Mitsuru Kuribayashi

Yuka Takagi

Naoyuki Uchida

Masayoshi Maki

Hisakazu Kurita

Hideharu Chono

A ropinirole-containing patch comprises an adhesive agent layer and a support layer, the adhesive agent layer containing ropinirole and/or a pharmaceutically acceptable salt thereof, wherein a content of the ropinirole and/or the pharmaceutically acceptable salt thereof in terms of free ropinirole in the adhesive agent layer satisfies the following two conditions:

Ropinirole-containing patch and package thereof

Medical patch

An adhesive which comprises aqueous and nonaqueous polymers suitable for holding an lipophilic drug, etc., and has tackiness and cohesiveness which are sufficient for the plaster of a patch; and a patch employing the adhesive. The adhesive contains a polymer which comprises one or more kinds of acrylic or methacrylic monomer units, at least one kind of the monomer units having a hydroxy group, and which has been crosslinked with a boron compound.

Pressure-sensitive adhesive and patch employing the same

A transdermally absorbable preparation that even when a drug with poor solubility in a base is added in high concentration, is stable over time and can suppress crystallization of the drug, excelling in transdermal absorbability. There is provided a transdermally absorbable preparation, comprising a base and, added thereto, at least composite particles which are composed of a silicate compound and an organic acid and a drug.

Transdermally absorbable preparation

A patch formulation for external use where a basic drug, an organic acid and an organic acid salt are combined as essential components is disclosed. The basic drug is preferably in the form of its acid addition salt. The organic acid is preferably a carboxylic acid having carbon atoms of 2 to 7, and more preferably at least one acid selected from the group consisting of acetic, lactic, tartaric, citric, malic, benzoic and salicylic acids. The organic acid salt is preferably a metal salt of a carboxylic acid, and more preferably sodium acetate.

Patch formulation for external use

The problem of the invention is to provide a drug-containing patch which is very favorable in percutaneous absorbability and is excellent in sustainability of the drug efficacy, that is, the drug-containing patch having a sufficient percutaneous absorbability and effect sustainability in a degree to be actually used for therapy of patients. The problem is solved by a patch comprising a drug, a melting point lowering agent and an adhesive base.

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Tsukuba, Japan

Toshiro Yamaguchi