Our boy had a slight reaction to the medication. It was definitely related to the meds. The higher doses he was on as a baby made for a good few sleepless nights. If we increased the dose e.g. during times of illness, we knew to expect tummy trouble and cramps for a day or so afterwards. We noticed it most in the night time. Now his dosage seems to suit him more and he has no problems. He is 4. At CAH gatherings, this tummy trouble has not been a common experience amongst parents with whom I have spoken, but there have been some. Mostly it was a discomfort rather than a problem.

Good Luck!