Substance that is supposed to have a healing effect but lacks any active substance and can only create a suggestion of efficacy in those who use it. The name is of Latin origin and can be translated as "I will please". See nocebo .
It is a type of innocuous or inert medicine that generates a feeling of well-being for a patient but does not actually cure their ills. They are used as control elements of a clinical trial.
Everything, physical or psychological, devoid of any quality activates that he allows the individual a feeling of well-being. For example, amulet.