 Measurement of the variables. Intensity of pain. For both groups, a measure will be performed between the distance in mm from point 0 to the point that the patient indicates; with the understanding that the point represents the intensity of the pain using the NRS, values were registered in the NRS scale of each patient. This procedure will beginning after the second intake of the drug or placebo basal, after 8 hours 8-NRS, 24 hours, 48 hours and 72 hours post operatory. 