Hisamitsu Pharmaceutical Company, Inc.

Sachiko Honma

Tetsuro Tateishi

Satoshi Amano

Natsumi Kase

A patch preparation having a backing layer and a drug layer laminated on the backing layer; wherein the drug layer contains an adhesive containing at least one compound selected from the group consisting of fentanyl and pharmaceutically acceptable salts thereof, polyisobutylene, and a silicon-containing polymer; and a mass ratio of the polyisobutylene and the silicon-containing polymer in the adhesive is 20:1 to 7:3.

Adhesive preparation

A transdermal absorption preparation having a support and a pressure-sensitive adhesive layer consisting of multiple layers, wherein the pressure-sensitive adhesive layer comprises a drug-retaining layer containing a drug and an acrylic pressure-sensitive adhesive and a skin adhesion layer containing a styrene-isoprene-styrene block copolymer. This preparation can continuously release bisoprolol at a constant concentration. Moreover, it can be easily produced.

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Tsukuba, Japan

Sachiko Honma