atrial fibrillation
"This has been an excellent drug for my husband who has had an illeostomy since 1965 and then several years ago developed atrial fib.  Because it metabilizes higher in the digestive tract, it was expecially good for someone without a colon.   Unfortunately, Glaxo has decided to discontinue these capsules since Mar 2008.  We are upset with them and cannot find an equivalent the metabalizes higher in the digestive tract."