Japan and other countries regard E-cigarettes as pharmaceutical products (see in Table 1). Among them, some countries and regions regard E-cigarettes as medical products, such as Denmark, Estonia, Greece, Hungary, New Zealand, the Philippines, Slovakia, Sweden, and Taiwan, China. Other countries, such as Austria, Canada, Finland, Japan, and Switzerland, consider E-cigarettes to be pharmaceutical products based on whether the e-liquid contains nicotine or tobacco extracts. They regard E-cigarettes containing nicotine to be pharmaceutical products. For example, in France, when the E-cigarette and e-liquid are used for the purpose of quitting smoking, no matter how high the content and concentration of nicotine is, they will be regarded as pharmaceutical products .