My son is 5 months old, he get loose motions continuously for 5 days around 10 times in a day. Culture sensitivity for stool report came as negative but reducing substance in stool found positive. Dr. advised to stop mother feeding and prescribed nusobi milk powder which is a lactose free. After using the milk powder still the problem continues, when ever he drinks powder milk that many number of times he is getting motions. We consulted the Dr. again, he said slowly it will decrease. Now almost 10 days passed but we did not find any improvement. Please suggest what to do now?