Topic
5 research guides on thyroid science.
Comparing natural desiccated thyroid (Armour, NP Thyroid, ERFA) with slow release T3. T3:T4 ratios, consistency issues, and why some patients do better on pure sustained-release T3.
A head-to-head comparison of slow release T3 (SRT3), Cytomel (brand liothyronine), and compounded sustained-release T3. Pharmacokinetics, cost, availability, and which patients benefit from each.
Understand the critical difference between T3 and T4 thyroid hormones, why T4-only medication fails many patients, and how adding T3 can restore metabolic function.
High reverse T3 (rT3) blocks active T3 at the cellular level, causing hypothyroid symptoms even with normal labs. Learn how to test for it and what to do about it.
Selenium is the most critical mineral for thyroid hormone conversion. Without adequate selenium, your body cannot efficiently convert T4 into active T3 - no matter how much levothyroxine you take.