My son is only 9 months old, so we still have a few months before we switch from formula to cow's milk. I was wondering how other 1-year-olds are tolerating cow's milk. Most of my friends who have 1-year-olds seem to not tolerate cow's milk (i.e. diarrhea, vomiting, etc). Therefore, they are still on formula or breast milk.

What is your experience?