Ideally, the treatment is T4 only during pregnancy.
Thank you Dr Lupo. I spoke with my doctor and he wants to put me on the synthroid combined with a 1/2 grain of the nature throid. In your opinion, will that provide enough T4 for my baby?
No - it is not preferred to take T3 containing products during pregnancy as T4 is the main thyroid hormone the baby depends on -- but it is important to take thyroid medications in pregnancy and the dose usually requires increase. Levothyroxine (synthroid, levoxyl, etc) is the standard of care during pregnancy with a goal TSH in the 0.3-2.0 range typically.