Efficacy Study of a Standardized Pollen Extract Preparation (Cernilton) to Treat Inflammatory Chronic Prostatitis-Chronic Pelvic Pain Syndrome (CP-CPPS)

Inclusion Criteria: * men between 18 and 65 years * symptoms of pelvic pain for at least 3 months during the 6 months before study entry * a score in the pain domain of the German validated version of the NIH chronic prostatitis symptom index (NIH-CPSI) of 7 or higher * leukocytes of 10 or more in post prostate massage urine Exclusion Criteria: * urinary tract infection * acute bacterial or chronic bacterial prostatitis * history of urethritis with discharge 4 weeks prior to study entry * a history of epididymitis or sexually transmitted disease * residual urine volume of more than 50 mL due to bladder outlet obstruction * indication for or history of prostate surgery including prostate biopsy * treatment with phytotherapeutic agents * alpha-blocker agents or antimicrobial substances with prostatic penetration 4 weeks prior to study entry * treatment with agents influencing intraprostatic hormone metabolism 6 months prior to study entry