Undiagnosed but got my first colonoscopy next week. Does moviprep cause anyone to have a painful swollen and bloated abdomen and stomach? I find that only 2 sachets of movicol in 48 hours do that to me! As they look to have similar ingredients I assume the same and worse will happen when I take 20 times that amount in 12 hours. Any thoughts on how to counteract that problem? Painkillers? Thanks!