Hi,
I think that my doctor at the time had tried it to eleviate bladder spasms. I now use Detrol LA and Buscopan to combat these spasms. It does not get rid of them but it does dull the intensity.
I can't recall headaches directly, but I had to stop using this drug to manyother side effects.
The major one was abdominal cramping. I also have long standing urological problems and Vesicare was causing problems in that area as well. Headaches could have been part of it as well. The drug was tried on June 12, 2008 and even has one Rep on it.
I have most of the bottle left. I will never try it again.
All the best.
Ron