atrial fibrillation
"My mother was on these for 9 months. 
It caused her to have constant, severe diarrhea. 
Just yesterday she had a major bleed whilst going to the toilet. 

She had numerous tests on her tummy troubles a few months back and they found nothing wrong. 
Obviously Dr's prescribed these and couldn't be bothered reading up on the drug. She has been so sick for 6 months. Crazy."