Why someone wants to use this intra nasally I don't know. However I called a pediatric pulmonologist the other day about using this med fora 5 year old. Presently its approved down to 6 years old. He told me that in a few weeks it will have approval as young a 2 years old. That should answer this particular breastfeeding question. Merck or the FDA should be able to give the doctor more info. Rob Rob Cordes, DO pediatrician mailto:[log in to unmask] *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html