Short and Long-Term Follow up Results of Daily 5 Mg Tadalafil as a Treatment for Erectile Dysfunction and Premature Ejaculation

Abstract Objective: To evaluate effectiveness and safety of a 5mg tadalafil daily treatment for men with erectile dysfunction (ED) and premature ejaculation (PE) and assessment of long-term follow up by persistence of improvement 2 years after stoppage of tadalafil.Materials and Methods: The study included 160 patients diagnosed with erectile dysfunction from April 2018 to June 2020. All were evaluated using the international index of erectile function questionnaire-5 (IIEF-5) to evaluate ED and intravaginal ejaculatory latency time (IELT) for PE. Patients subdivided into two equal groups. I included 80 patients treated with tadalafil 5 mg daily for 3 months, and group II included 80 patients treated with a placebo for same period. After 3 months treatment and 2 years later after stoppage of tadalafil, all patients were assessed for ED and PE using the same questionnaires. Results: The mean IELT and IIEF pretreatment were 37±11.24 s and 13.2±4.2 respectively for group I, while in group II was 35.98±10.8 s and 13.12±4.11, respectively. After 3 months of treatment, the mean value of IELT in group I showed a highly significant improvement from 37±11.24 sec to 120.5±47.37 sec (p-value < 0.001), but for group II, the mean values of IELT showed no significant improvement from baseline 35.98±10.8 to endpoint 39.43±13.6 ( p-value > 0.05). As regarding the IIEF, there was a highly significant improvement from baseline 13.2±4.2 to endpoint 20.45±4.5 in group I (p-value < 0.001) while there was no significant difference in group II from baseline 13.12±4.11 to endpoint 15±4.84 (p-value > 0.05) . 2 years later after stoppage of tadalafil , 75 patients from group I complete follow up and there was significant improvement in IELT and IIEF form base line (37±11.24) (13.2±4.2) to endpoint (98±18.3) (19.1±2.3) respectively but less than the results after 3 months treatment.ConclusionDaily Tadalafil 5 mg was effective, tolerable, and safe treatment for patients suffering from ED and PE. Long-term follow up after 2 years declared persistence of significant improvement.