Is it normal for a child to have crystals in their gall bladder?

As a parent, you need to do everything you can do to alleviate your child's discomfort. Give him the medication - it can't hurt and may help. Then, do some research on foods to avoid that contribute to gallstone formation and change his diet. You can also go to WebMd.com and type gallstones in the search line and read up on this for more information.