Helping humanity improve its health and better understand the placebo effect. If the over-the-counter drugs work better than the placebo, they will not be allowed to enter the market. The scientist must follow the key points to achieve a positive effect of the placebo effect. There are many limitations of placebo effect, but to better understand humanity about placebo effect, there should be more research and studies on placebo effect according to modern medicine, this will be very beneficial for society in the long term.