are you sure this is a loose wrap? it sounds like the wrap may be too tight, since pills can't be swallowed . There si an esophagus test that can be down to see if the wrap is too tight. my wrap is too tight for a little over 2 years, and i still experence "heartburn like pain". i have been diagnosed with a hypersensitive esophagus. i have to take atavan 2-3 times a day to soothe the burn like symptoms. I have been thru all the tests and there is no acid reflux in my system now..... i would suggest another opinion from a different thoracic surgeon. if he is getting a bloated feeling after drinking water, then it is possible to get diarhea, because of rapid dumping into the small intestine. i can't get mine reversed right now, since my neck and back are acting up very badly from arthritis,until i can get it under control. He should have a stool check to make sure he doesn't have C-diff bacteria. Some of his diahrea could be symptomatic of this. Consult with your PCP for ideas. Good luck and god bless.....kozlo52