<s>[INST] My one year old was put on Lactaid from whole milk after two weeks of loose stool (not watery diarrhea) because her doctor though it might be a lactose intolerance. She has been on lactose free milk for 1 1/2 weeks and there has been barely a difference, if any. Any ideas? [/INST] Hi... Thank you for consulting in Chat Doctor. It seems your kid is having viral diarrhea. Once it starts it will take 5-7 days to completely get better. Unless the kids 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 diarrhea. I suggest you use zinc supplements (Z&D Chat Doctor.  </s>