Doctors have noted that some children develop gastrointestinal symptoms, such as diarrhea or abdominal pain, after drinking fruit juice. This seems to be caused by the fact that certain juices, such as apple and pear, contain significant amounts of sorbitol, a naturally occurring but nonabsorbable sugar alcohol. Prunes contain the highest sorbitol of all fruits, which makes them such a great laxative. Citrus fruit juice contain no sorbitol. So, from that standpoint, the orange juice you daughter is drinking is not a problem.

Following is a list giving the amount of sorbitol in different fruits (same for their juice) in grams of sorbitol per 100 grams of fruit or juice:

prune         12.7pear           2.1sweet cherry   1.4peach          0.9apple          0.5grape          tracestrawberry     0raspberry      0blackberry     0pineapple      0orange         0

Keep in mind that too much juice, of any kind, is not good. It will fill up a child's small stomach, taking the place of more nutritious foods. No juice has the protein or all the minerals that are essential for growth. Four ounces of juice a day is the limit for children under two. You may want to switch the orange juice you serve your daughter to the calcium fortified variety that is now available.