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D., study author and director of the Program in Human Sexuality at the University of Medicine and Dentistry of New Jersey and professor of psychiatry, Robert Wood Johnson Medical School, Piscataway, New Jersey."Also, in this study, the duration of effectiveness did not appear to influence the incidence or severity of side effects." In addition, study results show that in secondary measures of efficacy - including ability to penetrate, satisfaction with hardness of erection and overall satisfaction - Cialis was statistically superior to placebo at 24 and 36 hours. The most commonly reported (greater than 5 percent) treatment-emergent side effects in the study were headache, flushing and upset stomach. Less than two percent of patients taking cialis or placebo discontinued the study due to side effects. cialis forum catalog how was viagra discovered improved effect of viagra lotrel and viagra
