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The Best Science Supported Supplements for Thyroid Health

The Best Science Supported Supplements for Thyroid Health

Normal levels of thyroid hormones are necessary for maintaining a healthy metabolism, weight, energy levels, and brain function.1

Up to 8% of women over 55 have mild hypothyroidism which can lead to a slower metabolism and weight gain.2

Here are the best science supported supplements for thyroid health found in Thyroid Support by Beyond Vita®:

1. Ashwagandha

Ashwagandha (Withania somnifera), also known as Indian winter cherry or Indian ginseng, is a powerful adaptogenic herb with a long history in Indian Ayurvedic medicine.

In a 2018 study on 50 people with sub-clinical hypothyroidism, researchers found that ashwagandha extract increased production of thyroid stimulating hormone and normalized levels of the thyroid hormones called T3 and T4. The researchers concluded that ashwagandha can help raise thyroid hormone levels in people with mild hypothyroidism.3

Multiple studies also found ashwagandha root extract stimulates thyroid hormone production.4,5,6

Ashwagandha may help raise thyroid hormone levels in people with hypothyroidism.

2. Forskolin

Forskolin is a bioactive compound from the roots of the Indian plant known as Coleus forskohlii.

Forskolin has been shown to promote the production of the thyroid hormone T4.7

Another study found that forskolin stimulates the thyroid to secrete more T3 and T4.8

Researchers suspect forskolin increases the production of thyroid hormone by mimicking the effect of thyroid stimulating hormone on iodine metabolism.9,10

Forskolin can help increase the production of thyroid hormones which is essential for a healthy weight and metabolism.

3. L-Tyrosine

L-tyrosine is an important part of the production of the two thyroid hormones triiodothyronine (T3) and thyroxine (T4). The body combines l-tyrosine with iodine and selenium to make thyroid hormones.

A 2007 study found tyrosine was able to increase the production of triiodothyronine.11

Researchers in another 2015 study found a reduction in circulating tyrosine levels resulted in a reduction of thyroid hormone levels.12

L-tyrosine has also been shown to prevent a decrease in thyroid hormone production during periods of chronic stress.13

L-tyrosine may help the production of thyroid hormones.

4. Inositol

Inositol can help cells in the thyroid gland produce more of the thyroid hormone T4.14

Researchers have reported that the combination of inositol and selenium could be useful for people with Hashimoto's thyroiditis. Hashimoto’s, also known ans autoimmune thryoiditis, can result in hypothyroidism meaning a sub-optimal amount of thyroid hormones are being produced.15

A 2017 study on 21 participants with autoimmune thyroiditis found that inositol and selenium can reduce the risk of progression to hypothyroidism.16 Another study with 168 people found a similar result.17

Inositol may help thyroid health.

5. Iodine

Iodine is essential for the synthesis of the two thyroid hormones triiodothyronine (T3) and thyroxine (T4).18 If iodine levels are low then the body can not make thyroid hormones which can result in hypothyroidism.

Iodine may help raise thyroid hormone levels in people with hypothyroidism.

6. Vitamin D

Vitamin D, also known as vitamin D3 and cholecalciferol, is a very important vitamin that can function like a hormone on every cell in the body.

Normal levels of thyroid hormone are required for maintaining a healthy weight and metabolism.

Vitamin D deficiency has been shown to be associated with hypothyroidism in a 2013 study.19 Additionally, patients with autoimmune thyroid disorders have low levels of vitamin D and researchers claim vitamin D supplementation may improve symptoms.20

Researchers in another study concluded that vitamin D deficiency was significantly associated with autoimmune thyroid disease in pre-menopausal women.21

Vitamin D may improve thyroid health in people with low vitamin D levels.

7. Selenium

The thyroid gland contains the highest amount of selenium in the human body.22

Selenium is required to make selenoproteins which are required for a healthy and functioning thyroid.23

A study of 6,152 participants found a low level of selenium is associated with an increased risk of thyroid disease.24

In addition, multiple studies support the use of selenium to reduce the risk of developing hypothyroidism.25,26,27

Selenium is essential for thyroid hormone production and can help protect the thyroid.

8. Zinc

Zinc is needed to convert thyroxine (T4) to triiodothyronine (T3) which is the most potent thyroid hormone. Low levels of zinc could result in hypothyroidism.28

In a 1994 study with 9 hypothyroid and zinc deficient patients, oral supplementation with zinc normalized T3 levels after 12 months. The researchers concluded that zinc may play a role in thyroid hormone metabolism.29

Zinc may help restore and normalize thyroid hormone levels.

9. Manganese

Manganese plays a critical part in the production of the thyroid hormone called thyroxine which is also called T4.

Normal levels of thyroid hormones are essential to maintain an optimal weight, metabolism and appetite.

A deficiency in manganese can reduce thyroid function and lead to less thyroxine.30

In a 2015 comparative study of young women with thyroid disorders researchers noted that hypothyroid patients had low serum tests for manganese.31

Manganese is needed for the production of thyroxine which is essential for thyroid health.

10. Vitamin B12

Vitamin B12 (cobalamin) is an essential B vitamin the body can not produce so it must come from food or supplements.

Vitamin B12 deficiency is a common occurrence in hypothyroidism and supplementation leads to improvement in symptoms.32

Vitamin B12 may help correct hypothyroidism.

11. Vitamin A

Vitamin A, also known as beta carotene, is an essential vitamin that the body needs to function properly.

Vitamin A deficiency has been shown to lower levels of thyroid hormone.33

Researchers in a 2012 study on 84 women found that vitamin A supplementation might reduce the risk of hypothyroidism.34

Beta carotene may help increase thyroid hormone production and prevent hypothyroidism.

12. Magnesium

Magnesium deficiency was found to be associated with hypothyroidism in a 2018 study.35 Other studies have also demonstrated a reduction in thyroid hormones as a result of magnesium depletion.36,37

Supplemental magnesium may help restore thyroid hormone levels.38,39

Magnesium may help raise thyroid hormone levels and improve thyroid health.


These are the best science-backed supplements for optimal thyroid function and health.*

We recommend Thyroid Support and Magnesium Complex by Beyond Vita®.  They include the best science supported natural ingredients including the ones listed above.
Try our rated Beyond Vita® supplements 100% risk-free with our 90-day satisfaction guarantee. If you are not happy for any reason you will receive a full refund. It's that simple.