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[From better erection to better sex: viagra updates 2005].

Viagra (sildenafil citrate) has been proven as the first choice of treatment for erectile dysfunction (ED) due to its producing rigid, sustained erection and rapid onset of action. In recent years, more and more studies on efficacy of Viagra focused on the improvement of overall sex life, as well as the psychological impact on the ED patients. Using several psychological assessment tools such as erectile dysfunction inventory of treatment satisfaction (EDITS), self-esteem and relationship (SEAR) questionnaire, psychological impact of erectile dysfunction (PIED) scores, these studies found that Viagra treatment significantly improved the following psychological factors: satisfaction of both ED patients and their partners with sexual intercourse and sexual relationship, confidence and self-esteem of the patients, desire for intimacy and sexual intercourse. The significant increased frequency of sexual intercourse attempts and improvement of health-related quality of life were also seen in the patients receiving Viagra treatment. Thus, Viagra produces the better erection and then promotes the better sex cycle.