I had an interesting experience with Nutrasweet while breastfeeding:
        My daughter had terrible gas almost since birth; she always had a
'poopy' aroma about her and passed gas almost constantly.
        I eliminated almost ALL food from my diet one at a time to the
point of being down to bread only!!!  No one had a clue as to the source
of the gas until someone mentioned that they got 'gassy' when consuming
aspartame.  So, I eliminated it; (I was drinking about a quart of
nutrasweet koolaid a day)
        Within a day or two my daughter's gassiness completely
disappeared!  So, it seems that nutrasweet may well pass into the
breastmilk and have adverse effects on the infant.
        I wonder, too, about prenatal exposure.....