Doesn't sound right to me, but none the less, Miralax is a DRUG. It gas chemicals in it, so I would really try to help the child naturally through monitoing of the diet and making sure the child is drinking plenty of water. Believe me, it is not easy. My daughter is chronically constipated and I can easily take her in and get her on something, however, I chose to watch her diet, etc. and it worked. It takes time and reading to figure out which foods are the culrpit. I know when my daughter is constipated now it is my fault for not watching closely enough.