I too am pregnant, I'm 13 weeks, also on PTU. I was thinking of breastfeeding. But I also read that in can cross into the breast milk. I haven't yet asked my Endo about it. As for Lupis I don't know. Right now my choice is to not breastfeed, since I wouldn't want to take the chance of making my healthy baby hypo. I have read that if you do decide to breastfeed and be on the PTU your baby has to be monitored carefully. Good luck

I am in the midst of reading up on PTU and breastfeeding and came across this website. I am 5 months pregnant and have been on PTU for about 6 weeks. I was diagnosed with graves in late September. A couple things I've read today about breastfeeding and PTU... The benefits of breastfeeding outweigh the negatives of your baby receiving a low dosage of PTU. When pregnant, PTU travels directly into the baby through the umbilical cord at a higher dosage than when breastfeeding. When breastfeeding, the baby is receiving a much lower dosage of PTU than when he/she is inside of you. I live in Tucson, AZ and have a SUPER endo. He told me that there are risks in pregnancy with being on PTU -- having a baby with hypothyroid is the main one. If that did happen, it would only be temporary, as it would be while breastfeeding. I plan to breastfeed because I feel very strongly that my baby needs the benefits of breastmilk, unless I come across a study that says there is a high risk of complications due to PTU and breastmilk. I will also talk to my midwife and endo more extensively as my due date approaches. There are LOTS of sites out there addressing this topic if you want to do a little of your own research. Blessings!

I recently talked to my Endo about breastfeeding my baby. Right now I'm amazed that all my levels are normal for the first time. He has lowered my dose down to just 50mg twice a day. He is hoping to lower it even more when I see him next month. He told me that usually if my the levels stay at a nice level they can stop the PTU for breastfeeding. And they just keep a close eye on your levels during that time. So I guess it really just depends on how your levels are doing.

I found out I had graves at 5 months post partum. I took PTU...and continued to Breastfeed my baby. He is now 1 yr old, and we are begining the weaning process. We have never had a problem with me being on meds. I consulted with his pediatrician that said it was perfectly fine. He has never been sick, not even a cold, so I think he got all the benefits.

hey i've recently had a baby and i did breastfeed for about 10 mos. he's perfectly healthy, and i think the risk is relatively low, but it also depends on the amount of ptu. also just like to add one thing which seems amazing to me but your body can actually regulate thyroid during pregnancy, for the first time i only had to take 100mg a day and just as a precaution, but about 4 weeks after i delivered it shot back up again!

Thank you all for the advise. I printed all your responses so I can go over them with my endo. I am seeing my endo next week and wanted to be prepared to ask as many questions about it as possible.
Thank you again for all your responses. The feedback is great as I am a major worry freak. I dont want to mess the baby up but all the feedback is very positive.