Natural Desiccated Thyroid (NDT)
Porcine-derived thyroid extract containing both T4 and T3, preferred by some patients for its natural hormone profile.
Overview
Natural Desiccated Thyroid (Armour Thyroid, NP Thyroid, etc.) is derived from porcine thyroid glands and contains both T4 and T3 in a fixed ratio. Some patients report feeling better on NDT compared to synthetic T4 alone, though clinical evidence is mixed. It provides a more complete thyroid hormone profile.
How It Works
NDT provides both T4 and T3 from porcine thyroid tissue in an approximate 4:1 ratio. The T3 component provides immediate thyroid hormone activity, while the T4 serves as a reservoir for ongoing T3 conversion, providing a more physiological hormone replacement.
Benefits
Potential Side Effects
Dosage Information
Typical starting dose is 30-60mg (0.5-1 grain) daily, titrated based on symptoms and lab work. Full replacement for most adults ranges from 60-120mg daily. Taken on an empty stomach.
Administration
Oral tablet (daily)
Rating
4.2 / 5.0
Category
Thyroid Support
Common Symptoms
Common Questions
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