Pat, You wrote: "Now I haven't got a clue as to how trypsin can be used in production, but not be in final product. maybe a Chemistry major amongst us can enlighten me. But pork is still involved so this would be a no-no. I wonder how many Jewish and Muslim people know this!" Thanks for getting the information on the ingredients from Nestle. I just felt the need to make some comments. I do not know exactly how trypsin is used but it is an enzyme that degrades protein. So I would assume that its use is to somehow modify the proteins in the cow's milk in order to make it easy for the infant to digest. Therefore the enzyme would be used to initiate this change but wouldn't be present in the final product--similiar to rennet in cheese-making. I do believe that most orthodox Jews or Muslims with strict dietary laws would know better than most what's in their food. It is obvious that the mother in the initial post already knew that Carnation Good Start had pork products in it. So I think we probably should assume that mothers who have these kind of issues know about what they can and cannot feed their infants. Of course, I have to add that many enzymes used in food production are genetically engineered. Enzymes have been genetically engineered since the early 1980's. See: http://www.eufic.org/gb/tech/pag/tech01e.htm Trypsin is one of the enzymes that can be genetically engineered. No I'm not saying that it is in infant formula. But who knows??We have no laws that makes the industry compelled to tell us. We have to trust the industry and I have very little faith that this particular industry or particular company--Nestle-- is trustworthy. Going to soy formula, has its problems. While it may satisfy religious dietary laws, recent studies show that soy formulas may be risky for infants--anything that isn't the mother's own milk has a built-in risk. But soy formulas have 10 times more aluminum than milk-based formula. Soy is a potent enzyme inhibitor. In fact it inhibits trypsin, which may depress growth and cause enlargement and pathological conditions of the pancreas, including cancer. In a previous excellent post to Lactnet, Marsha Walker commented on soy formulas and their risks. So I won't go on but there alot of concerns about soy infant formulas. Mothers need to know that the only way to protect their infant from the unknown products in infant formulas and the risks not yet discovered is to exclusively breastfeed. Valerie W. McClain, IBCLC *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html