The Evaluation of Banana Flower Stamens Extract on Prevention of Benign Prostatic Hyperplasia in Adults

Inclusion Criteria: * Male aged 40-80 years old * 7 ≤ IPSS score \<19 * The subject did not take α-blocker or anticholinergic agents in the last 8 weeks. The subject did not take 5α-reductase inhibitor or androgen suppression agents in the last 16 weeks (depending on medical history). * The subject isn't diagnosed with cancer * The subject is able to read and finish the information on the questionnaire. * The subject must read and sign the informed consent form after the study has been fully explained. Exclusion criteria: * The subject has a history of epilepsy or convulsions, liver and kidney disease, cancer, endocrine disease, mental illness, alcohol or drug abuse, and other major organic diseases (depending on medical history). * The lower urinary tract urination symptoms of the subject are not related to prostatic hypertrophy (depending on medical history). * Residual urine volume \> 250 mL (depending on medical history) * Subjects have had pelvic radiation therapy or pelvic surgery (including prostate or bladder surgery, but those who only have had a prostate slice can participate in the trial). * Planned invasive procedures or examinations during the trial period, including prostate surgery, prostate biopsy, cystourethroscopy, pelvic surgery, exploratory laparotomy, or any treatment requiring the use of a urinary catheter. * Subjects have taken sexual hormone preparations including LHRH agonists, anti-androgens, feminine, or Penta-reductase inhibitors (Proscar and Av…