Dear Loni, Gentamycin has very poor oral absorption (which is why it is always given IV) and should not be a problem. Both erythromycin and cleocin have been approved for use in bf mothers by the AAP and are used themselves in the treatment of newborn infections. Hale does note one case of bloody stools in a baby where the mom was on gent/cleocin therapy. Would strongly suggest you get a copy of "Medications and Mothers' Milk" by Tom Hale, now available in the 1998 ed. Sharon Knorr, BSMT, LLLL, IBCLC Lactation Consultant Services Rochester, New York mailto:[log in to unmask] _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866]