Hi-
I have Graves, but had RAI and am now hypoT. I just had a baby on 5/26. I was on 150mg Levoxyl. I went down to 125 (my pre-preg dose) right after.

I saw my endo 8 weeks later and I was told that I was hyperT. I really did not recognize any symptoms of it though. She lowered my dose to 112 mg. The plan was to have blood work again 8 weeks later.

Well, I have been on the lower dose for almost 4 weeks, but recently I am noticing some symptoms. I have been really sweaty, slight hand tremble, and out of breath easily.

I am also breastfeeding. My daughter did battle hyperT at birth, which we hope has passed. I'm just wondering, are there bad things that can happen to my daughter if I am hyperT right now that is transmitted through my milk?

Also, should I ask for blood work sooner to see if I need an even lower dose or should I give this new dose more time? Again, I have been on the lower dose for 4 weeks now. Is that enough time to have had the appropriate impact?

Hello smj,

Welcome to the forum. You are asking good questions. I'm not taking any hormone replacement medications. I'm still trying to get euthyroid with Methimazole. Therefore, I'm not personally familiar with Levoxyl. Maybe some of the members will join us soon and leave you more information.

As for breast feeding, the one thing I can think of that could pass to your baby is Levoxyl. In drugs.com it says that it can pass into breast milk, but it is not expected to be harmful to the baby. I recommend asking your Dr. and Pediatrician about this, especially since your baby has had thyroid problems in the past.

I think you should report your new symptoms and let your Dr. tell you if she would like to move labs to an earlier date.

Wish you the best with your labs and your new dose. Please keep us posted.

The best to you and your baby,
Caro

Hello - At 4 weeks out, you should be able to get a good read on the effect of the dosage change, so I would ask your doctor if you can get labs done more quickly.

I haven't seen any specific studies on thyroid hormone replacement dosage and breastfeeding, but if you have any concerns, your doc should be able to test your baby's thyroid function just as a precaution.

Wishing you all the best!