Patient description: The patient is a 55 year old man visiting his primary care physician for lower urinary tract symptoms including frequency, urgency, weak stream, incomplete emptying and intermittent flow for the past 9 months. Further evaluation revealed: IPSS score : 15 Post-void residual: 70 mL Prostate volume (TRUS): 60 mL Prostate-specific antigen (PSA) level: 3.2 ng/mL 10 mL/sec of maximum flow rate when urine volume was 130 mL He is otherwise healthy only using Vit D 1000 units daily. His recent blood chemistry (3 days ago) was normal: Hgb: 13.5 g/dl WBC: 135000 /mm3 Plt: 350000 /ml PT: 11 second PTT: 35 second INR: 0.9 Creatinine: 0.5 mg/dl BUN: 10 mg/dl U/A: Color: yellow Appearance: cloudy PH: 5.3 Specific gravity: 1.010 Glc: 100 Nitrite: negative Ketone: none Leukocyte esterase: negative RBC: negative WBC: 2 WBCs/hpf U/C: negative

Clinical trial eligibility criteria: eligible ages (years): 50.0-999.0,  Benign Prostatic Hyperplasia (BPH) A male at 50 years of age and older 2. Clinical signs and symptoms of benign prostatic hyperplasia 1. A volume of prostate gland (TRUS) > 30 cc 2. Moderate to severe lower urinary tract symptoms with IPSS ≥ 13 3. 5-15 mL/sec of maximum flow rate (Qmax) measured when urine volume was at least 125 mL 3. PSA level < 10 ng/mL (however, if 4 ng/mL < PSA < 10 ng/mL, a person with a biopsy result, confirming that he does not have prostate cancer) 4. Residual urine volume ≤ 200 Ml 5. Consent not to participate in other clinical trials as a subject during this clinical trial period. 6. Consent of patient and patient's partner a. Patient Consent to avoid pregnancy by using condoms for 90 days after the end of study participation period and treatment. (Not applied if the patient had vasectomy.) b. Patient's partner (Consent should be obtained before visit 4, when necessary.) Consent to avoid pregnancy by using contraceptive devices or oral contraceptives during the patient's participation in clinical trial and for 90 days after the end of treatment, except if the partner reaches menopause or is surgically sterilized  Hypersensitivity reactions to ingredients of this drug. 2. Taking drugs that affect the results of clinical trials. ex) 5-alpha reductase inhibitors, drugs similar to LHRH, alpha blockers, alpha-beta blockers, anticholinergics, antidiuretic hormones, diuretics, PDE-5 inhibitors, beta-3 adrenoceptor antagonists, steroids, immune suppressants, saw palmetto, etc. 3. Taking drugs of an unapproved study drug in the past or the study drug for this clinical trial 4. Diagnosis with prostate cancer in the past or at present 5. Diagnosis by an investigator to have an influence to an evaluation on urine flow symptoms due to other previous or current diseases besides benign prostatic hyperplasia 6. Surgeries or radiation therapies for prostate gland, bladder or pelvis, or who had invasive treatments for benign prostatic hyperplasia 7. Severe medical condition which may be cause problem to conduct the clinical trial (e.g., chronic heart failure (CHF), difficult-to-control diabetes (HbA1c > 7%), mental disorder, drug, or alcohol abuse, etc.) 8. Moderate to severe liver hypofunction and severe kidney hypofunction (less than 30 mL/min of creatinine clearance) 9. Any other subjects who are considered to be ineligible for this study by an investigator [Inclusion for Randomization] 1. Clinical signs and symptoms of benign prostatic hyperplasia 1. Volume of prostate gland (TRUS) > 30 cc * 2. moderate to severe lower urinary tract symptoms with IPSS ≥ 13 3. 5-15 mL/sec of maximum flow rate (Qmax) measured when urine volume was at least 125 mL 2. Residual urine volume ≤ 200 mL 3. Patient's partner (Consent should be obtained before visit 4, when necessary.) - Consent to avoid pregnancy by using contraceptive devices or oral contraceptives during the patient's participation in clinical trial and for 90 days after the end of treatment, except if the partner reaches menopause or is surgically sterilized. (* In case that additional TRUS examination has been performed after screening, a decision should be made based on the latest result.)