Until recently I believe Metformin has been considered unsuitable for nursing mothers, but Tom Hale did some studies in the last year on transfer of Metformin into breastmilk (I was one of his samples). From the info he sent me and what I heard him saying at a later talk, it seems the transfer is very low, the number of 0.4% rings a bell, but it would be worth contacting him to see if he has enough data to publish yet Kirsten Blacker Minnesota USA formerly Perth, W.Australia _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com *********************************************** 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