Before prostate surgery I was on Enablex for overactive bladder due to prostatic benign hyperplasia. I was off Enablex from the day of surgery until three months later then put back on due to incontinence problems. Now I have dizzy spells all day..not bad enough to feel like I'm about to pass out but bad enough for me to sit a while. How long will these spells continue and how do I determine when it's a problem to bring to the doctor?