Hi, I had gone through your question and understand your concerns. Babies fed with lactose based formulas are more likely to have frequent motions than on lactose free formulas but it does not mean baby has lactose intolerance , if baby is having watery stools with presence of reducing substances in stool , chances of lactose intolerance are more . Colour other than presence of blood is not significant. Hope this answers your question. If you have additional questions then please do not hesitate in writing to us. Take care. • DISCLAIMER: - All the information provided here is for information purpose only , it is not a substitute for the advice of a physician after physical examination , it is not intended to replace your relationship with your doctor. This information in no way establishes a doctor-patient relationship. Before acting anything based on this information do consult your doctor. I recommend that online users seek the advice of a physician who can perform an in-person physical examination