Chronic prostatitis can certainly be difficult and frustrating to treat. I would make sure that thorough evaluation has been performed to make sure it isn't anything else. This would include prostatic massage and testing for any prostatic fluid, transrectal ultrasound, or prostatic MRI to make sure there isn't any abscess present.
There are some cases of prosatitis where 4-12 weeks of antibiotics are needed. If chronic prostatitis is not the case, you may want to consider other diagnoses. This would include bladder neck and urethral spasm that can be treated with alpha-blocking agents (i.e. flomax or terazosin). Another consideration would be pelvic flood dysfunction - which would be treated with benzodiazepines.
You may want to discuss these considerations with your personal physician or urologist.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.