US Patent 11400053 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 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.