The child has had extremely painful bowel movements since 9 mos. A lower GI with contrast showed no blockage. She had been on 5 oz (diluted with 3oz of water) to no avail. The Miralax does work, but I fear using it indefinately especially since the label says for occasional constipation. This was recommended by a pediatric GI specialist who had ruled out all but 'too few nerves' in the rectal area. He has her taking 1/2 the adult dose.