I've searched the archives. I have a mom S/P thyroidectomy due to thyroid CA 2 years ago. She is on synthroid and her Dr. wants her levels a little higher than normal to help keep the CA from coming back. I looked on Medline and found this to be the standard practice for thyroid CA. In the archives there are some posts about high thyroid hormone levels (due to extra synthroid) being problematic (causing similar supply problems as hypothyroid). I'm not worried about the excess amount getting into her milk, more so it decreasing her supply, and why would it decrease her supply? Does anyone know how high is too high? I'm sure there is variation, but I need something to go on. She seems to think her Dr. wants her hormone levels to be twice the normal amount. Thanks, Mandy Frost, MS, RD, IBCLC *********************************************** To temporarily stop your subscription: set lactnet nomail To start it again: set lactnet mail (or digest) To unsubscribe: unsubscribe lactnet All commands go to [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(R) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html