Dexilant
"Took Dexilant delayed release 60mg for 8 days and experienced diarrhea and stomach pain starting the third day.  Hoped it would resolve after a few days but did not.  Have continued to have abdominal pain and now constipation and strange-colored stool (white to clay) for more than a week after stopping the medicines.  Back to omeprazole for me and then to my doctor if this doesn't stop soon.  Dexilant did not work for me."