hi, my 10 year old has been diagnosed with lactose intolerence. However, rather than diarrhea, she gets severly constipated. I've been researching and it sounds like her problem could be both lactose intolerance and irritable bowel. We've tried miralax and once daily lactose intolerance pills. They help - about 85% of the time. Any info on probiotic treatments ? I'd appreciate any input.