At present the US is still the main center for research and development of transdermal patches. Work is also proceeding in Japan, Korea and Europe, but so far with only limited results, and with differing approaches.
目前貼劑的主要研發重鎮還是在美國，其他像日、韓、歐洲等也都很積極，不過成果都還算有限，而且方向也不盡相同，例如日本就比較著重生產局部性貼劑，如沙隆巴斯等治療肌肉酸痛的產品。