Liu Cheng-hsiung, associate professor in pharmacology at the Institute of Chinese Medicine, has a detailed knowledge about traditional Chinese transdermal plasters. He explains that skin patch medication dates back to ancient China; so long ago that it is impossible to say exactly when it first emerged.
對於傳統中藥貼劑有相當研究的中國醫藥學院藥學系副教授劉正雄指出，貼劑形式的藥品在中國出現年代非常久遠，確切年代幾乎已不可考。