Are Antithyroid Medications Safe During Pregnancy?
Managing hyperthyroidism during pregnancy is critical for both maternal and fetal health. Propylthiouracil (PTU) is generally preferred during the first trimester as it is less likely to cause birth defects compared to methimazole. However, methimazole may be used in the second and third trimesters to reduce the risk of liver toxicity associated with PTU. Close monitoring of thyroid function and adjusting medication doses are essential to avoid both maternal and fetal complications.
