question: My 10 yr old son is extremely lactose intolerant; only rate 3% of the enzyme most have 7 - 9%. I cook all his foods and check all ingredients for milk; lactose, lactic acid lactylate, etc. I recently made dinner using McCormick meat tenderize (that I know see contains calcium silicate). We had it two days in a row.... he s been sick with diarrhea and extremem adominial pains for two days. It seems as if this ingrediate is acting like lactose. Can this be?