Hisamitsu Pharmaceutical Company, Inc.

Yusuke Tanaka

Takaaki Yoshinaga

Kentaro Nakashima

Masahiro Sato

Keiichiro Tsurushima

Disclosed is a patch comprising an adhesive layer on a backing layer, wherein the adhesive layer comprises lidocaine or a pharmaceutically acceptable salt thereof, propylene glycol, a rubber adhesive base and a terpene resin, wherein the content of the lidocaine or a pharmaceutically acceptable salt thereof in the adhesive layer in terms of free form is 2 mass % to 6 mass % with respect to the total mass of the adhesive layer, wherein the ratio of the mass of the lidocaine or a pharmaceutically acceptable salt thereof in terms of free form to the mass of propylene glycol in the adhesive layer is 1:0.6 to 1:1.8, and wherein the content of the terpene resin in the adhesive layer is 5 mass % to 18 mass % with respect to a total mass of the adhesive layer.

Lidocaine-containing patch

The present invention provides a patch comprising a backing layer and an adhesive agent layer, wherein the adhesive agent layer is non-aqueous, the adhesive agent layer contains nonylic acid vanillylamide and aluminum hydroxide, a content of nonylic acid vanillylamide in the adhesive agent layer is 0.01 to 0.025% by mass based on a total mass of the adhesive agent layer, a content of aluminum hydroxide in the adhesive agent layer is 0.55 to 1.5% by mass based on the total mass of the adhesive agent layer, and a mass ratio of the content of nonylic acid vanillylamide to the content of aluminum hydroxide ((content of nonylic acid vanillylamide):(content of aluminum hydroxide)) in the adhesive agent layer is 1:27 to 1:150.

Patch containing nonylic acid vanillylamide

The present invention provides a patch comprising a backing layer and an adhesive agent layer, wherein the adhesive agent layer is non-aqueous, the adhesive agent layer contains nonylic acid vanillylamide, terpene-based resin, rosin-based resin, styrene-isoprene-styrene block copolymer, and liquid paraffin, a mass ratio of a content of the terpene-based resin to a content of the rosin-based resin ((content of the terpene-based resin)/(content of the rosin-based resin)) in the adhesive agent layer is 0.45 to 1.3, and a mass ratio of a content of the styrene-isoprene-styrene block copolymer to a content of the liquid paraffin ((content of the styrene-isoprene-styrene block copolymer)/(content of the liquid paraffin)) in the adhesive agent layer is 0.45 to 1.2.

Growing community of inventors

Tosu, Japan

Yusuke Tanaka