Shop products for Thyroid Extracts 
What are they?
Thyroid extracts are thyroid extracts derived from the thyroid glands of usually bovine (beef) sources.
The hormones of the thyroid gland regulate metabolism in every cell of the body. The medical treatment of underactive thyroid (hypothyroidism) usually involves a prescription of synthetic thyroid hormones (thyroxine and/or triiodothyronine) or thyroid extract (desiccated thyroid). The difference between prescription thyroid extract and the thyroid extracts sold as nutritional supplements is the latter are required by the U.S. Food and Drug Administration to be free of the known active thyroid hormones (thyroxine and triiodothyronine). The use of hormone-free thyroid preparations has not been evaluated in scientific studies, but some doctors believe these products may provide nutritional support to the thyroid gland or contain other compounds with possible hormonal activity.
Where are they found?
Thyroid extracts are available as nutritional supplements in capsules and tablets.
Thyroid extracts have been used in connection with the following conditions (refer to the individual health concern for complete information):
| Rating | Health Concerns |
|---|---|
 |
|
Reliable and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary
studies suggesting a health benefit or minimal health benefit. For an herb, supported by traditional use but
minimal or no scientific evidence. For a supplement, little scientific support and/or minimal
health benefit. | |
Who is likely to be deficient?
As thyroid extract is not an essential nutrient, therefore, no deficiency state exists.
How much is usually taken?
The recommended intake depends on the concentration, method of preparation, and quality of the thyroid extract. Follow the manufacturer’s recommendation on the label.
Are there any side effects or interactions?
No side effects or adverse reactions have been reported. However, people taking prescription thyroid hormones should consult their doctor before using non-prescription thyroid extracts.
At the time of writing, there were no well-known drug interactions with thyroid extracts.
