“…Several studies [2][3][4][11][12][13] report a number of benefits of premedication when compared to placebo, such as (a) decreased preoperative anxiety, psychological trauma, and stress response; (b) better anesthesia induction with lower incidence of desaturation; and (c) lower frequency of postoperative behavioral disturbances. On the other hand, some authors [5,6,[14][15][16] have questioned this point of view and report that premedication was found to be no better than saline, suggesting that the evidence of benefit is not strong enough to justify studies without placebo control. Furthermore, premedication may yield side effects and complications [5,6,17] (e.g., deep sedation, respiratory depression, paradoxical agitation, vomiting), requiring an investigation of the best compromise between advantages and disadvantages.…”