I take 12 Asacol per day and have for years. I've never experienced any hair loss... or any other side effects, for that matter.
It's hard to do this, but please try to remember not to get caught up in all of the possible side effects. As you will learn from all of us here, we all have very different experiences with this disease and with the medications that we use to control it. When I was first diagnosed, I was so afraid to try any medications because I was convinced I would get all the horrible side effects. I've taken Asacol, Rowasa and Prednisone and have had very few side effects at all. There is no way of knowing how these drugs are going to effect your daughter. It's really just trial and error. And my view is... no sense getting all worked up over the unknown!