I feel like we used to have a chart hanging up in one of our cabinets about how many enzymes to take with certain foods. Maybe ask your doctor or the clinic social worker. You could also try contacting the manucfacturer of your son's enzymes. Some foods I've always had trouble digesting and therefore take extra enzymes- hot dogs, Chinese food, pizza, peanut butter, ice cream/milkshakes and chicken nuggets. Anything especially greasy or fatty gets to me. I've been told to take enzymes with bananas, but I did not know about the vitamin thing-- though I usually take my vitamin at breakfast and are getting enzymes anyway. I guess you learn something new everyday, even after 15 years <img src="i/expressions/face-icon-small-smile.gif" border="0">