After identifying these, the researchers peruse the academic quarterlies to see if anyone has already extracted these components from herbal medicines. At this stage it is also essential to make certain that the substances aren't toxic and to determine if, apart from their effects on the penis, they affect any other organ.
找出單一成分後，首先要比對國際學術季刊，看看是否早已有人在這種草藥中找出過這種成分，同時確認有無毒性，接著還要試試看這種新成份，除了在陰莖海綿體中有相當好的活性，還要看它是否有影響其他器官的作用。