Cách sử dụng
A placebo is a fake medicine or treatment that doesn't actually do anything. It is often used in medical research studies to see if a new medicine or treatment is actually helpful. Sometimes people are given a placebo instead of the real medicine, and they believe they are getting a real medicine, which can sometimes make them feel better even though the medicine didn't actually do anything. In everyday language, we sometimes use the word "placebo" to refer to something that doesn't actually do anything, but people believe it does.