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Natural Supplements for Thyroid Support: What You Need to Know

Written by Andrew Le, MD

UpdatedOctober 23, 2024

Left unchecked, thyroid imbalances can cascade into serious health issues, impacting everything from your metabolism and heart health to your mental well-being and fertility. Thyroid imbalances are highly prevalent, affecting over 12% of the US population, with one in eight women likely to develop a thyroid disorder in their lifetime, yet 60% of those affected remain undiagnosed.

While medication is sometimes necessary, many people find relief through targeted nutritional support. That's where thyroid supplements come in. By providing essential nutrients like iodine, selenium, and zinc, along with adaptogenic herbs, these products can help nourish your thyroid and promote optimal hormone production and conversion. The result? Restored energy, clearer thinking, and a body that feels like 'you' again.

We've researched the best natural thyroid hormone supplements and selected them based on their ingredient quality, potency, scientific evidence, and user feedback. These supplements aim to optimize thyroid function by providing essential nutrients like iodine, selenium, zinc, and herbal extracts that support hormone production, conversion, and metabolism. Whether you're looking to address a specific deficiency or seeking comprehensive thyroid support, our curated list has options to help you reclaim your vitality and well-being.

Supplements for Thyroid Health

Thyroid health is crucial for overall well-being, as the thyroid gland regulates metabolism, growth, and development. Various dietary supplements can play a significant role in supporting thyroid function and managing thyroid disorders.

Iodine

Iodine is essential for thyroid hormone production, with its primary role being the synthesis of thyroxine (T4) and triiodothyronine (T3). Iodine deficiency can lead to various thyroid disorders, including hypothyroidism and goiter.

A study highlighted that severe iodine deficiency causes hypothyroidism, which impairs growth and development in children. In contrast, mild to moderate deficiency leads to increased thyroid activity and risks of hyperthyroidism due to nodular goiter formation.

Another study conducted in four Chinese provinces found that iodine intake among pregnant women was below the recommended level, indicating a need for careful dietary monitoring and supplementation during pregnancy to avoid thyroid dysfunction.

Selenium

Selenium is a critical micronutrient for thyroid health. It protects the thyroid gland from oxidative stress and converts T4 to T3. A study demonstrated that selenium deficiency exacerbates the effects of iodine deficiency, highlighting the importance of selenium in thyroid hormone synthesis and function.

Additionally, research on combining myo-inositol and selenium found that this supplement could reduce thyroid antibodies and oxidative stress in patients with autoimmune thyroiditis, suggesting an immunomodulatory role for selenium in thyroid health.

Iron

Iron is vital for the metabolism of thyroid hormones. It aids in converting T4 to T3 and is necessary for the thyroid gland to utilize iodine fully. Iron deficiency is common among patients with thyroid disease and can lead to hypothyroidism.

A clinical case study showed that treating iron deficiency significantly improved thyroid function in a patient, emphasizing the need to monitor and correct iron levels in patients with thyroid disorders.

Zinc

Zinc is another essential mineral for thyroid hormone synthesis and function. It regulates deiodinase enzymes responsible for converting T4 to T3 and plays a role in synthesizing TSH.

A review highlighted that zinc deficiency can impair thyroid function and lead to abnormalities in hormone levels. Ensuring adequate zinc intake through diet or supplementation is important for optimal thyroid health.

Vitamins A and B12

Vitamin A and B12 are crucial for thyroid function. Vitamin A deficiency can impair iodine uptake and the conversion of T4 to T3, while vitamin B12 deficiency is common among patients with hypothyroidism. Studies have shown that supplementing these vitamins can improve thyroid function and overall health.

For instance, vitamin A derivatives have been found to increase iodine uptake in thyroid cancer cell lines, suggesting potential therapeutic applications. Additionally, a meta-analysis revealed that a significant portion of hypothyroid patients suffer from vitamin B12 deficiency, indicating the importance of B12 supplementation in this population.

Best Natural Supplements for Thyroid Hormone

We have researched the top supplements for thyroid health and selected them based on their ingredient quality, potency, scientific evidence, and user feedback. These supplements aim to optimize thyroid function by providing essential nutrients like iodine, selenium, zinc, and herbal extracts that support hormone production, conversion, and metabolism. These do not serve as substitutes for thyroid hormone replacement therapy.

Optimox Iodoral

Optimox Iodoral 12.5mg is a targeted dietary supplement designed to support thyroid function through a balanced intake of iodine and iodide. As one of the best iodine supplements for thyroid health, this product combines 5 mg of iodine and 7.5 mg of iodide as potassium salt, aligning with the traditional Lugol solution formulation in a convenient tablet form.

Recognized for addressing iodine deficiencies, which can lead to symptoms like fatigue, weight gain, and hair loss, Iodoral aims to maintain optimal thyroid health and influence energy levels and overall wellness.

The tablets are unflavored, catering to those who prefer their supplements without any added taste. The formulation is free from common allergens such as wheat, gluten, corn, soy, yeast, dairy, eggs, fish, shellfish, and peanuts, making it suitable for a wide range of dietary needs.

Pros

  • Optimox Iodoral addresses iodine deficiencies that can lead to dryness and brittleness, supporting strong hair, skin, and nails.
  • By supporting thyroid function, the supplement aids in maintaining energy levels, crucial for those experiencing fatigue associated with thyroid issues.
  • The high-potency formula ensures that users receive a substantial amount of iodine, which is essential for those diagnosed with iodine deficiency.
  • Tablets form offers an alternative for those who find liquid iodine solutions unpalatable or inconvenient, improving user compliance.
  • Free from a wide range of common allergens and made without artificial flavors or preservatives, making it ideal for those with sensitivities or who prefer a more natural supplement approach.

Cons

  • Tablets may not be suitable for everyone, especially those who have difficulty swallowing pills.
  • Some users may experience side effects typical of iodine supplements, such as a metallic taste, stomach upset, or allergic reactions, although these are generally rare.
  • Given the high potency, it's important to consult a healthcare provider to ensure that the dosage aligns with individual health needs, as excessive iodine intake can lead to thyroid dysfunction.
Global Healing Selenium

Global Healing Selenium 200mcg is an organic and non-GMO solution for supporting thyroid and immune health crafted from certified organic mustard seeds. As a supplement for thyroid support, it harnesses the antioxidant properties of selenium, which not only assist in maintaining a healthy thyroid gland but also contribute to cardiovascular health and the protection of cells from oxidative stress.

With each capsule providing a potent 200 mcg dose of selenium, this supplement is designed to meet the needs of both men and women looking for enhanced immune support and improved overall well-being. The product is also vegan-friendly and devoid of common allergens like gluten, soy, and dairy, making it a suitable choice for various dietary preferences.

Pros

  • Global Healing Selenium is made with organic ingredients, ensuring high-quality and environmentally conscious production.
  • The product is highly potent, providing 200 mcg of selenium per capsule, which is effective for supporting the thyroid and immune systems.
  • It features strong antioxidant properties that protect against cellular damage and support cardiovascular health.
  • The capsules are vegan and free from GMOs, gluten, soy, dairy, sugar, artificial flavors, synthetic dyes, and toxic fillers, catering to those with specific dietary restrictions or preferences.
  • Manufactured in the USA in a cGMP-certified facility, ensuring the product meets stringent quality control standards.

Cons

  • Capsules may be difficult to swallow for some individuals, especially those who have trouble with pills.
  • As with any supplement, there are potential side effects, such as digestive discomfort, which a few users might experience.
  • Not all users prefer a specific source of selenium (mustard seed), especially if they have sensitivities or specific dietary restrictions that make mustard unsuitable.
  • Despite its benefits, reliance on supplements for nutrient intake should be balanced with a healthy diet, and it is recommended that you consult a healthcare provider before starting any new supplement regimen.
Natures Craft Free Form L-Tyrosine

Natures Craft Free Form L-Tyrosine 500mg Capsules are designed to support mental energy, focus, and cognitive performance, making them a beneficial supplement for adults seeking to enhance brain function. As a supplement for thyroid function, each capsule delivers a high-strength dose of L-Tyrosine. This amino acid plays a crucial role in the production of neurotransmitters that regulate emotions, energy levels, and mental clarity.

This supplement is particularly helpful for those looking to improve their mood, increase focus and attention, and support thyroid health. As a bonus, these capsules are crafted from high-quality ingredients, ensuring purity and potency.

Pros

  • Natures Craft L-Tyrosine promotes enhanced mental clarity, focus, and cognitive performance, making it ideal for students, professionals, and anyone needing mental sharpness.
  • Supports thyroid function which can lead to improved metabolism and overall energy levels.
  • The supplement is made from high-quality, non-GMO ingredients ensuring a safe and effective product.
  • Offers mood support, which can benefit those dealing with stress or mental fatigue.
  • Priced competitively, providing good value for a high-strength amino acid supplement.

Cons

  • Some users may experience side effects such as . headaches. or gastrointestinal discomfort, common with amino acid supplements.
  • The capsules have a noticeable taste that some users may find unpleasant.
  • Requires consistent intake to observe significant benefits, which may be better for those seeking immediate results.
  • Not suitable for individuals who prefer non-capsule forms of supplements, as it is only available in capsule form.
1 Body Thyroid Support Supplement

1 Body Thyroid Support Supplement with Iodine is a comprehensive dietary aid designed to bolster thyroid health and enhance overall wellness. This supplement harnesses the power of an extensive array of nutrients, including Vitamin B12, iodine, zinc, selenium, and ashwagandha, to support thyroid function and improve energy levels and focus.

Crafted for those experiencing symptoms of thyroid imbalance such as fatigue, weight fluctuations, and mood swings, this product is vegetarian, non-GMO, and free from common allergens, making it accessible to a wide audience seeking natural health solutions.

Pros

  • Provides a rich blend of essential nutrients and herbs that support thyroid health, potentially improving metabolism and energy levels.
  • Contains ashwagandha and cayenne pepper, which are known to aid stress management and improve circulation, enhancing overall vitality.
  • Including non-GMO and allergen-free ingredients makes it suitable for individuals with dietary restrictions.
  • Manufactured in the USA, ensuring high-quality production standards.
  • Supports not only thyroid health but also contributes to better sleep and enhanced mood, as reported by users.

Cons

  • Some users may experience side effects such as headaches or digestive discomfort, typical of supplements affecting hormonal balance.
  • Requires consistent daily usage to see effective results, which may vary from person to person.
  • The unflavored capsules may have a noticeable taste that some users find unpleasant.
  • While beneficial for many, the comprehensive formula may provide more nutrients than necessary for those with specific sensitivities or already using other supplements.
ForestLeaf Thyroid Support

ForestLeaf Thyroid Support with Iodine is a comprehensive supplement that enhances thyroid health and overall well-being. It contains essential nutrients and herbs to support thyroid function, including iodine, vitamin B12, zinc, selenium, ashwagandha, and more. This product is particularly beneficial for those experiencing fatigue, lack of focus, and metabolic issues related to thyroid imbalances.

Made with vegetarian capsules and free from common allergens, it is suited for a wide range of dietary preferences and is manufactured in the United States, ensuring quality and purity.

Pros

  • The supplement includes a robust mix of thyroid-supporting vitamins and minerals, enhancing energy levels and metabolic function.
  • It contains ashwagandha and other herbs known to help combat stress and improve mental clarity, which is beneficial for maintaining daily productivity.
  • Vegan-friendly and free from common allergens like wheat, gluten, soy, and dairy, making it accessible to users with dietary restrictions.
  • Formulated to improve focus and reduce fatigue, it helps users manage the symptoms associated with thyroid imbalance.
  • The product is 100% vegetarian, appealing to those following a plant-based diet.

Cons

  • Some users may experience side effects such as headaches or digestive issues as their bodies adjust to the supplement.
  • The capsules may be large and difficult to swallow for some individuals, potentially limiting their use among those who prefer smaller pills or different forms.
  • While it contains beneficial ingredients, individual effectiveness may vary, requiring users to adjust their lifestyle or diet for the best results.
  • The unflavored capsules may have a natural taste that some users find unappealing.
  • As with any supplement, it is recommended to consult a healthcare provider before starting to ensure it complements existing health regimens and medications.
Sandhu's Thyroid Support Complex

Sandhu's Thyroid Support Complex is a comprehensive dietary supplement that enhances thyroid function and overall health. This product is crafted in the USA and boasts a potent blend of nine essential nutrients, including selenium, zinc, iodine, L-tyrosine, ashwagandha, and more, to support thyroid health.

Each bottle contains 70 capsules, providing a 35-day supply. It is formulated to support mood, cognitive health, healthy weight management, and overall well-being. The capsules are easy to swallow and suitable for those following gluten-free, soy-free, and dairy-free diets.

Pros

  • Features a robust blend of nine essential nutrients, supporting a wide range of thyroid-related functions and general well-being.
  • Includes ashwagandha and L-tyrosine, which may help improve mood and cognitive function, enhancing daily productivity and mental clarity.
  • Formulated without gluten, soy, or dairy, making it accessible for individuals with these dietary restrictions.
  • Manufactured in the USA in an NSF-certified facility, ensuring high quality and safety standards.
  • The product supports overall thyroid health which can lead to improved energy levels, weight management, and mood stabilization.

Cons

  • Due to the potent nature of the ingredients, some users may experience side effects such as mild stomach discomfort or allergies.
  • The daily recommended intake of two capsules may be inconvenient for those who prefer a once-daily dose.

Final Words

After evaluating these top thyroid support supplements, 1 Body Thyroid Support Supplement is the standout choice. This vegetarian, non-GMO product offers a comprehensive blend of essential nutrients and adaptogenic herbs, including iodine, selenium, zinc, vitamin B12, and ashwagandha. Its well-rounded, allergen-free formulation addresses multiple aspects of thyroid health, from hormone production to stress management.

If you've been struggling with fatigue, weight issues, or mood changes, it may be time to give your thyroid the support it needs. Try 1 Body Thyroid Support Supplement to help reclaim your energy and well-being. Remember to consult your healthcare provider before starting any new supplement regimen.

FAQs on Thyroid Supplements

What are the most common supplements recommended for thyroid health?

Iodine, selenium, zinc, vitamin D, and B vitamins are common supplements recommended for thyroid health. These nutrients support thyroid hormone production and overall thyroid function.

Are there any risks associated with taking thyroid supplements?

Taking thyroid supplements without medical guidance can lead to adverse effects, such as hyperthyroidism or interactions with other medications. It's important to consult with a healthcare provider before starting any supplement regimen.

Can I use supplements instead of synthetic thyroid hormones to treat my hypothyroidism?

This should be discussed directly with your medical provider. The traditional treatment for hypothyroidism is through synthetic thyroid hormone replacement therapy.

References

  • Ghiya, R., & Ahmad, S. (2019). Severe iron-deficiency anemia leading to hypothyroidism. Journal of the Endocrine Society, 3(Suppl 1), SUN-591. https://doi.org/10.1210/js.2019-SUN-591
  • Unfer, V., Koch, C. A., Benvenga, S., & Leung, A. M. (2023). Editorial: Dietary supplements for preserving thyroid health: The scientific evidence-based view. Frontiers in Endocrinology, 14, 1213082. https://doi.org/10.3389/fendo.2023.1213082
  • Severo, J. S., Morais, J. B. S., de Freitas, T. E. C., Andrade, A. L. P., Feitosa, M. M., Fontenelle, L. C., de Oliveira, A. R. S., Cruz, K. J. C., & Marreiro, D. N. (2019). The role of zinc in thyroid hormones metabolism. International Journal of Vitamin and Nutrition Research, 89(1-2), 80-88. https://doi.org/10.1024/0300-9831/a000262
  • Zimmermann, M. B., & Boelaert, K. (2015). Iodine deficiency and thyroid disorders. The Lancet Diabetes & Endocrinology, 3(4), 286-295. https://doi.org/10.1016/S2213-8587(14)70225-6