Hi...as you say your son is passing stools 3-4 times per day, I don t think you should be using medicines which will increase the frequency of the stools. I suggest you stop - Duphalac and laxopeg please. The other medicines are for diarrhea. Unless there is blood in stools you do not need to give Zifi and Flagyl too. It seems your kid is having viral diarrhoea. Once it starts it will take 5-7 days to completely get better. Unless the kid s having low urine output or very dull or excessively sleepy or blood in motion or green bilious vomiting...you need not worry. There is no need to use antibiotics unless there is blood in the motion. Antibiotics might worsen if unnecessarily used causing antibiotic associated diarrhoea. I suggest you use zinc supplements (Z&D drops 1ml once daily for 14 days) & ORS (Each small packet mixed in 200ml of potable water and keep giving sip by sip) as hydration is very important and crucial part of treatment. If there is vomiting you can use Syrup Ondansetron (as prescribed by your paediatrician). Regards - Dr. Sumanth