Inclusion Criteria:  Male patient, aged 40 to 75 years, with a stable marital relationship (6 months) Diagnosis of post-prostatectomy erectile dysfunction (IIEF5 score less than 22)  Exclusion Criteria:  Neurogenic ED (spinal injury, Parkinson, MS) Hypogonadism (total testosterone < 300 ng/dl) Decompensated diabetes mellitus (Fasting Glucose>200 and/or Glycated Hemoglobin>8%) Decompensated systemic arterial hypertension (SBP > 160 and/or DBP >100 Morbid obesity Use of vacuum device smokers Diagnosis of coronary artery disease and/or cerebrovascular disease Impossibility of understanding the objectives, study technique and informed consent cognitive deficit