I have a mother nursing a 15 month old who has CFS and wants to take thyroxine for thyroid problems. She wants to know if this is safe while nursing, ant information would be helpful. TIA! Kay Hagan-Haller [log in to unmask] I am only one, but I am one. I cannot do everything, but I can do something; and what I should do and can do, by the grace of God, I will do.