Soy - based infant formula ( SBIF ) is sometimes given to infants who are not being strictly breastfed ; it can be useful for infants who are either allergic to pasteurized cow milk proteins .
Who are being fed a vegan diet .
Soy - based infant formula ( SBIF ) is sometimes given to infants who are not being strictly breastfed ; it can be useful for infants who are either allergic to pasteurized cow milk proteins or who are being fed a vegan diet .