The aim of the study is to test the hypothesis that using tadalafil plus shockwave in primary patient with ED treatment in more effective in improving erection rigidity and sexual function, then using tadalafil alone.
The goal of this trial is that using tadalafil plus low-intensity extracorporeal shockwave therapy (li-ESWT) is more effective than using tadalafil alone in improving erection rigidity and sexual function. The efficacy of the combination of li-ESWT and tadalafil has been confirmed by a number of studies, including in patients after radical prostatectomy. However, this method is still not a first-line method in young primary patients and its benefits in combination with drugs for these patients are not obvious.~The investigators assume that the combination of tadalafil plus low-intensity extracorporeal shockwave therapy (li-ESWT) will improve the subjective state of patients assessed by points of validated questionnaires and Number of successful intercourse per week.