I've been scoped from the top down and the bottom up - I wont' lie to you, it's not fun, but you'll get through it and be just fine and it's very empowering to at least KNOW!! Be glad you don't have to drink the 2 gallon jug... blech!
I take Levsin VERY RARELY - if I'm spasming terribly and hurting it does help, but I cannot take it on any kind of regular basis because of the type of side effects you mention and also it makes the C worse over long term (but not just one dose).
GL!!!
-------------------- Take care,
Michelle
...the greatest of these is LOVE. (I Cor 13)