When taking syrup, some people often put syrup bottle mouth in direct contact with the mouth. On the one hand, it is easy to pollute and deteriorate the syrup because of the bacteria stuck on the bottle mouth. On the other hand, you can't control the amount of the drug you take, either it won't work or you can take too much to increase the side effects. In addition, the syrup is generally equipped with a dose of dropper or small cup, easy to use, but after each use must be cleaned, dried and put away.