It seems that your baby daughter has developed a problem with digesting milk which is known as lactose intolerance.This may be just a temporary problem lasting a few weeks but can last for much longer. It would be best to put her on a soya formula now. Start off with Isomil2 and see if she can tolerate this formula. If she can then keep her on it for 4 weeks and then change her to Isomil3.In about 3 months you can try her on cow's milk again and if she develpos diarrhoea then you will need to keep her off milk and all dairy products and use soya milk instead.
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