While Ditropan is active, spasms are eliminated, but it should still be possible to urinate from a filled Bladder. After three to ten hours, Bladder spasms return with increasing urgency. That is the time to empty the Bladder completely. Urinate each morning and empty the Bladder as completely as possible. Then use a dose of Ditropan large enough to prevent spasms during the day, but not so large that it keeps the Bladder flaccid through the evening.
Most people use one or two tablets each morning.
If Bladder spasms disturb nightime sleep, take a dose before going to bed. This will control spasms till morning. This advise differs from the package insert. It recommends one tablet three or four times a day without considering the state of your Bladder function. As a result of this repetitive dosage schedule, the Bladder may develop constant flaccidity.