Before revision: Example A clear example is the 1964 work of Shader and colleagues who used a combination of low dose phenobarbital plus atropine to mimic the sedation and dry mouth produced by phenothiazines.
After revision: Example An example of an active placebo is the 1964 work of Shader and colleagues who used a combination of low-dose phenobarbital plus atropine to mimic the sedation and dry mouth produced by phenothiazines.