Placebo controlled trials are a staple of medical trials. Placebo trials allow for researchers to understand the efficacy of a novel drug or procedure. There is always concern for ethical issues when providing placebo therapy because certain patients will not be receiving potential treatment. However, these patients are told that there is a chance for them to receive placebo instead of the actual therapy. Thus, there should be no ethical concerns in that sense. Additionally, patients are given actual therapy after the trial if they would like. However, placebo therapy does play an interesting role in studies. At times, placebo therapy can provide interesting results and sometimes work as effectively as the actual therapy.