C.B.
My son was put on poly vi sol w/ iron from about 2 or 3 visit and yes he would cry and scream anytime he tried to have a bowl movement. I stopped giving it too him and talked to my dr and she said that Iron didn't cause constipation. So I gave him another 2 days and it again cause him issues. I finally just changed to poly vi sol w/o Iron and that did the trick with the constipation.