For women with irritative bladder syndrome (urgency, incontinence, frequency and nocturia) a study from a London teaching hospital showed that acupuncture is as effective as drug treatment but with significantly fewer side effects (Acupuncture in Medicine 1994: 12(1) 9-12).
Another study on women with recurrent urinary tract infection showed that 73% of women became free of infection following acupuncture (American Jnl of Public Health 2002: 92(10) 1609-1611). It seems to help interstitial cystitis and my clinical experience is that acupuncture and nNEAP may also be effective in mild incontinence in men and women, early prostate problems and bedwetting in children.