Colief is an excellent product for infant colic and is very widely used in the UK. It should not cause diarrhoea, infact by reducing lactase it should reduce the chances of a baby having diarrhoea due to lactose intolerance.from your description it is possible that your baby nephew is allergic to cow's milk. He does not have reflux so that is not the cause of his symptoms.As a start he should go onto NAN HA to see if his symptoms improve.He may need a more highly modified milk such as Similac Alimentum but first try the NAN HA.
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