<s>[INST] good day doctor my daughter is 11months old and has been on lectogen since she was 2months old and it s treated her well. but for the past three days she has diarhea after each feed. does this mean she is ready for Lectogen 3 or must i change the fomuler all together and if so to what? regards julia moss [/INST] Transient lactose intolerance is common during diarrhoea.if diarrhoea dosent subside with medications temporary lactogen feeds should be stopped and supplemented with soya milk like Isomil. </s>