Inderal is propranolol, a beta-blocker, anti hypertensive,  Hale says
plasma levels are exceedingly low, hence the milk levels are low as well."
baby will get " <0.1% of the maternal dose.  This amount would be
clinically insignificant."  "Long term exposure has not been studied, and
caution is urged.  Of the beta-blocker family, propranolol is probably
preferred for lactating women." pg. 563-564. Sincerely, Pat in SNJ