McCall McPhersonFounder, Modern Thyroid Clinic.

Desiccated Thyroid & Pregnancy: Essential Facts Every Mom-to-Be Should Know 🤰💊

14 Jan 2025 · 1 min

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A short medical commentary by McCall McPherson addressing use of desiccated thyroid (e.g., Armour) in pregnancy. He notes desiccated thyroid predates levothyroxine and has been used for over a century in pregnant women despite limited formal trials. McPherson states he has no objection to Armour in pregnancy but emphasizes ensuring adequate and stable maternal T4 throughout gestation.

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Let's talk about desiccated thyroid in pregnancy. Desiccated thyroid was around for half of a century before levothyroxine was invented. And you know what women took during that half of a century when they have thyroid conditions and they were pregnant? They took armor. So even though it's not been formally tested in pregnancy, it has been used for a hundred years now, literally over a hundred years in pregnant women. So I have no issues with armor in pregnancy. Again, the trick is knowing how to get the patient enough T4 in a stable way consistently throughout pregnancy.