1. We use phenytoin in small babies. 2. Here's the concluding sentence in Hale's book "all of the current studies indicate rather low levels of phenytoin in breastmilk and minimal plasma levels in breastfeeding infants". The monkey wrench is that Hale starts out by saying "The effect on the infant is generally considered minimal if the levels in the maternal circulation are kept in low-normal range (10 micrograms/ml)". I'm not sure why this is there, since there is no evidence the baby gets much. Jack Newman, MD, FRCPC