According to Cheng, drugs developed in the West tend to be more potent to match the build of the people. Also, Westerners are more prone to cardiac disease, so transdermal patches for treating angina have already been developed. In the Orient, however, liver disease is more prevalent, so there is clearly a greater need for transdermal patches designed to treat liver ailments.
他說，西方人研發的藥品為適應他們的體型，劑量通常較多；又如西方人多心臟病，所以他們已經開發了治療心絞痛的貼劑，但是東方人得肝病的比例頗高，顯然更需要治肝病的貼劑。