Hi all. I'd really appreciate your help. I'm a C-type. I've been on Prevacid for about four months and Domperidone (a motility drug) for about 20 days. In the last week or so, I've noticed that my stool has become very hard. I'm still able to go, but it is very uncomfortable. I'm trying to figure out the cause. I have noticed that in the last month, I am having less frequent bowel movements, so there is something leading up to this hard stool problem. I'm wondering if it is possible that the Prevacid (after all this time) may be causing this constipation or might it be the Domperidone. Is it possible that it is either of these two drugs given that I have been on them for awhile without problem? Has anyone had experience with this?