I have no pharmacologic information about this drug which is helpful.
Perhaps Dr. Hale.  However, there is no reason to imagine this drug
would be present in the milk in such concentrations as to cause serious
problems for the baby.  Since breastmilk has such value for all babies,
but especially premature ones, I think the baby should get the mother's
milk.  When in doubt, continue breastfeeding.  The baby has been exposed
to the stuff throughout pregnancy.

I don't know what effect it might have on the letdown reflex.

Jack Newman, MD, FRCPC