AndrewHi Margaret.
Yes the meds certainly can cause terrible tummy trouble in some babies, but it should get much better very quickly. Our SWCAH boy gradually grew out of it after a few months. A specialist confirmed what we already knew as parents. On the couple of occasions we had to increase dosage for illness, we knew we were in for bad nights of writhing and sleeplessness due to tummy cramps. Our chap is 4yrs 6 mths now; this miracle drug has kept him alive and well.
With every good wish,