The main objective of this study is to evaluate the clinical efficacy of the drug Sominex (Valeriana officinalis L., 40 mg, 30 mg Crataegus oxyacantha L. and Passiflora incarnata L. 50 mg) manufactured by the Laboratory EMS S / A, compared to placebo in improving sleep efficiency, based on the response of the sleep quality questionnaire (MSQ) and polysomnographic parameters described below: