I have been taking Oxybutynin 5mg and it had helped somewhat but I was having to use the restroom about every 2hours during the night. During the day I would hardly go at all, maybe 2 times all day. The Urologist increased the Oxybutynin to 10mg. That made me go every 1/2 hour during the night and it increased the urgency and the flow was much heavier. I didn t have a leakage problem until I switched to the 10mg and that occurred both during the day and at night. The Urologist then told me take both the 5mg and the 10mg. That gave me the same systems as when I was on the 10mg. I have switched back to the 5mg until I can reach the Urologist again. Is this what happens to others? When I switched back to the 5mg, I am having the 2hour frequency again.