<s>[INST] Hi I have a 7year daughter with mouldy green coloured poop, just wondering what the cause of it may be? She hasnt had any food colouring or too many green leafy veges in the last couple of days, she has suffered from constipation in the last few weeks. [/INST] Thank you for sharing your query on Chat Doctor, I have carefully worked through your case and most of the stool changes color have a little meaning, the green stool may be due to the poop goes through the intestines to fast (diarrhea) it has no time to turn brown, so it comes out green, but that's not a possibility because your daughter is constipated, so we need to consider other causes, although she is not eating green leafy vegetables at this moment I suggest to watch for flavored Chat Doctor.  Please kindly rate if my advice has been helpful Wishing you a good health  </s>