Can my 2 1/2 year old use miralax (polyethylene glycol) longterm? We believe constipation stems from daily diphenhydramine
If specialist agrees. For chronic constipation in a 2 or 3 year old, some sort of laxative is usually used. Long-term use of any medication in young children is done only if there is not a good alternative. A pediatric gastro-enterologist (specialist for intestinal issues) can evaluate and help decide on the treatment course, especially if a child can't be successfully weaned off a medication in two months.