I am seeking advice. For the last few years we have been trying to conceive whilst also battling with hypothyroidism. T4 alone (200mcg) just didn't work for me. After fighting for the t3t4 combination (t3, 5mcg twice day, t4 150mcg) things started to get better relatively speaking. At least bloods are in normal range with TSH suppressed. The advice up to yesterday had been that on positive pregnancy test increase my t4 intake. However, yesterday I updated my consultant that now I managed to get my weight down we can progress with IVF next month. I was told to stop T3 immediately and increase t4 by 25mcg to 175 MCG on positive test after implantation (fyi this would take me to a lower level than when I was previously on t4 alone). The only reason they gave was that they have no evidence on how to treat with T3 during pregnancy. I found this shocking and very confusing. Could I request people to get in touch if have experience of taking t3t4 (leothyronine and levo not thyroid extract) during pregnancy. Or if you have info / evidence of risk, benefits of changing from my adequate regimine to one that previously hadn't worked. Including risk to fertility, success of IVF and risk to pregnancy and embryo development +/- T3. Many thanks.
Thyroid hormone replacement in pregnancy t4 onl... - Thyroid UK
103,357 members • 119,477 posts