It appears you have not yet Signed Up with our community. To Sign Up for free, please click here....

Breastfeeding Message Board

Levothyroxine & Breastfeeding

Post New Thread   Closed Thread
LinkBack Thread Tools Search this Thread
Old 03-07-2006, 10:21 PM   #1
Join Date: Mar 2006
Posts: 2
PezLori HB User
Levothyroxine & Breastfeeding

Hello. This is my first time here - I'm a little worried about something and thought I'd post to get some opinions. I have an 8 week old who I am breastfeeding. I'm hypothyroid, and have been taking Levothyroxine. My levels fluctuated a little during pregnancy, any my dosage was upped. I asked to be tested a couple weeks ago, thinking things may have changed again post-partum. Sure enough, my TSH was down to .10. Normally I'm around 2. My very uninvolved primary care physician wrote on the lab results that it's low, but to continue on the same dosage. Well, my need for a new doctor and a new prescription is another issue, which I'll be working on right away, but here's why I'm here: I know that a hypothyroid mom who is taking the proper dosage of hormone replacement can breastfeed just fine, but what if I'm taking too much? The reason I'm worried is my daughter has a terrible time sleeping - she's extremely restless and jumpy. It's gotten progressively worse. I told my husband that she acts like she's feeling the same way I felt when my bonehead doctor accidentally gave me a prescription for a much higher dosage than I needed. Obviously I'm going to talk to my doctor about this, but I'm wondering if my medicine could be affecting her. Any thoughts on this? I've been researching on the web all evening and can't really find anything on point. Thanks in advance.

Sponsors Lightbulb
Old 03-08-2006, 06:14 AM   #2
Senior Veteran
Join Date: Jan 2003
Location: Missouri, USA
Posts: 12,931
midwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB Usermidwest1 HB User
Re: Levothyroxine & Breastfeeding

First... Congratulations on the new baby! You're in a lovely time of life, and I'm happy for you.

Just because your TSH is low doesn't mean you are overmedicated. My own TSH has been .02 for two years, and I'm not overmedicated or hyper. So... The biggest question is - How do you feel? Do you have signs like shakiness, fast bowels, insatiable appetite, extreme weight loss, etc? If you don't have any signs beyond the bit of nervousness that's normal for any new mother, you can't say you're overmedicated.

Then... even if you are taking slightly too much levoT, only a small fraction of it crosses into the breast milk. I found information from an article in Pediatrics magazine 2001;108:776-89, titled "The transfer of drugs and other chemicals into human milk". It says that the amount of thyroid hormone transferred into human milk is too low to affect blood thyroid hormone levels in newborns. The American Academy of Pediatrics considers levoT compatible with breastfeeding and has reported that no observable change is seen in nursing infants whose mothers are taking it.

If the baby is jumpy and restless, it could be just the way she's neurologically wired, or she could be sensing your own agitation and reacting to it.

I guess this doesn't really help you that much... But truthfully, neither does watching just your TSH. Unless you know your free thyroid hormone levels as well, you can't truly know if you're overmedicated or not. If the MD won't test your thyroid levels, you then have to fall back on your signs and symptoms instead, and that isn't very scientific.

Old 03-10-2006, 10:24 AM   #3
Join Date: Mar 2006
Posts: 2
PezLori HB User
Re: Levothyroxine & Breastfeeding

Thank you for your kind response. I have been feeling the effects a little, not too bad. I definitely want to get my dosage regulated a little better and will push for more thorough testing.

But in the meantime, I feel a little better about this little one! Hopefully she's just going through a stage, or getting used to being in the world.

Thanks again,

Closed Thread

Similar Threads
Thread Thread Starter Board Replies Last Post
3 days on Levothyroxine & have side effects redbluefish Thyroid Disorders 15 09-30-2009 03:03 AM
pregnancy & Medications perlee Pregnancy 2 11-13-2007 12:16 PM
Squats & Breastfeeding whitesocks Breastfeeding 2 06-03-2007 01:44 AM
Levothyroxine & Dizziness don444 Thyroid Disorders 7 03-16-2006 12:40 PM
Fragmin & breastfeeding kj118 Breastfeeding 0 12-17-2005 08:16 PM
Degenerative Discs & Pain Management goody2shuz Back Problems 357 08-16-2005 05:36 PM
whose breastfeeding & whose bottlefeeding? Angela3 Breastfeeding 40 07-25-2005 05:50 AM
Welcome March mammas & Reflux question anxiousme Infant Care (up to 18 months old) 33 04-08-2005 03:35 PM
Plan B (ECP)& Breastfeeding corbinsmama Breastfeeding 5 11-03-2004 07:38 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Sign Up Today!

Ask our community of thousands of members your health questions, and learn from others experiences. Join the conversation!

I want my free account

All times are GMT -7. The time now is 01:21 AM.

Site owned and operated by HealthBoards.comô
© 1998-2018 HealthBoards.comô All rights reserved.
Do not copy or redistribute in any form!