It is difficult to be sure about what is causing your son's problem. He seems to have a problem digesting food normally. This may be caused by lactose intolerance or to an actual milk allergy. Lactose intolerance is more likely and it would be best to try him on a lactose free formula such as NAN or S26 LF or a soya formula such as Isomil2.If you decide to put him on Isomil this would be helpful if his problem is really that of cow's milk allergy.It would be best to stop the Reuteri drops which may be aggravating his frequent stools and nappy rash.He should not be on Pegicol if he has frequent stools.If you are going to try him on a soya formula he should also be off all dairy products.If this advice does not help your son he should be seen by a paediatric gastroenterologist.
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