Patient description: The patient is a 63-year-old man presenting to the Emergency Department with a history of acute urinary retention in the past 2 days. Abdominopelvic CT scan revealed a large prostate and a bladder filled with urine. He is a candidate for urethral catheterization and TURP. Further evaluation revealed: Post-void residual: 71 mL Prostate volume (TRUS): 63 mL Prostate-specific antigen (PSA) level: 3.5 ng/mL His recent blood chemistry (3 days ago) was normal: Hgb: 13.6 g/dl WBC: 133000 /mm3 Plt: 370000 /ml PT: 12 second PTT: 34 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): 45.0-60.0,  Benign Prostatic Hyperplasia Male patients 45 to 60 y.o. inclusive with a documented diagnosis of Benign prostatic hyperplasia. 2. Lower urinary tract symptoms (LUTS) having been experienced for 3 months and longer. 3. Total IPSS score (International Prostate Symptome Score) of 8 to 15. 4. Prostate volume of more than 30 cm3. 5. Maximal urinary flow rate of 10-15 mL/sec. 6. Micturition volume of 125-350 mL. 7. Residual volume of less than 100 mL. 8. Serum prostate-specific antigen (PSA) level of less than 4 ng/mL. 9. Use of and compliance with contraceptive methods during the trial and for 30 days upon completion of participation in the trial. 10. Presence of the patient's information sheet (informed consent form) for participation in the clinical trial  Invasive therapies for BPH including a transurethral prostatic resection, thermotherapy, microwave therapy, transurethral needle ablation, stenting, etc. 2. Malignant oncological disease of the urogenital system as well as malignancies of any other localization during last 5 years. 3. Acute urinary retention (AUR) within 3 months before in the trial. 4. Neurogenic dysfunctions and bladder ears. 5. Urinary stone disease. 6. Urethral stricture, bladder neck sclerosis. 7. History of operative aids for pelvic organs. 8. Urogenital infections in the phase of active inflammation. 9. Systematic administration of agents exhibiting effects on bladder function and urine production. 10. Exacerbation or decompensation of chronic diseases affecting the possibility of patients to participate in the clinical trial, including severe concurrent cardiovascular conditions and disorders of the nervous system, renal and hepatic insufficiency. 11. History of administration of testosterone 5-alpha-reductase inhibitors (finasteride, dutasteride). 12. History of polyvalent allergy. 13. Allergy/intolerance to any component of drug agents used in the therapy. 14. Malabsorption syndrome, including congenital or acquired lactase or other disaccharidase deficiency. 15. Administration of drugs specified as "Prohibited concomitant therapy", within 3 months before enrollment. 16. Exacerbation or decompensation of chronic diseases affecting the possibility of patients to participate in the clinical trial. 17. Drug and alcohol consumption (over 2 alc. units daily), mental diseases. Legal incapacity or limited legal capacity. 18. Legal incapacitation or limited legal capacity. 19. Patients, who, in the investigator's opinion, will fail to observe the requirements during the trial or adhere to the studied drug administration procedure. 20. Participation in other clinical trials within 3 months before enrolment in this trial. 21. Presence of other factors, complicating the patient's participation in the trial (e.g., planned lengthy business and other trips). 22. A patient is a part of the center's research staff, taking a direct part in the trial, or an immediate family member of the investigator. Immediate family members are defined as spouses, parents, children or siblings, regardless of whether full blood or adopted. 23. The patient is employed with Scientific Production Firm Materia Medica Holding LLC, i.e. is the company's employee, part-time employee under contract, or appointed official in charge of the trial, or their immediate family