Hi Doctor, My 8 Month old son is suffering of loose motion since 3 months. Since beginning he has been prescribed with different antibiotic each time for a week. ( Norflox 100mg, Zifi, office 50 etc) along with tonics like (z&D, rinifol, Ascalyne). We have observed that every time we give him antibiotic for 3-4 days, the frequency of loose motion goes down and once the 7days course is completed , loose motion seems to be almost gone. However, after completing zinc tonics (which were prescribed for 10-15 days) , he again starts having loose motion. Every time we did the stool routine and doctor found that there is some infection in his stomach, however we are not being told about the cause of the same. Kindly note, as per doctors advise, we have started giving him boiled water, never gave bottled milk, using sterilized spoon and bowl to feed him. Still he develops infection just after completing Antibiotic and zinc tonic course. Below are the details. 1) Weight at the time of birth : 3.3 kgs 2) Weight at 8.5 months : 8.4kgs 3) In last 1.5 months, he has developed 3 teeth. Kindly suggest suitable cause for the infection and related treatment.Regards,samir.