Do Anti-Thyroid Meds Affect Pregnancy?

Published on, 04 June, 2024. Answered by Ms. Maryam Reinsch and Verified by Dr.Galen Team
Patient Question

Hello Doctor

 

Can anti-thyroid meds like methimazole affect pregnancy? Despite hyperthyroidism treatment, concerns arise. Worries about conceiving and medication impact.

Answered by Ms. Maryam Reinsch

Hello 

Thank you for reaching out to Dr. Galen. Please find the below response to your query.

 

Possibility:

 1. Normal methimazole use won't hinder pregnancy.

 2. Maternal exposure to methimazole in the first trimester can lead to teratogenic effects in the infant.

 3. Birth defects may include choanal atresia, congenital heart disease, and facial dysmorphism.

Recommendations:

 1. Propylthiouracil is often preferred during pregnancy.

 2. Superiority of propylthiouracil over methimazole isn't confirmed in comparative studies.

Seek Medical Advice:

 1. It's crucial to consult a healthcare professional for personalized guidance and monitoring during pregnancy.

 

Thanks

 


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About Ms. Maryam Reinsch

Ms. Maryam Reinsch

Obstetrician and Gynecologist

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