Your thyroid gland plays a vital role in regulating your body’s metabolism, energy levels, and overall health. When it’s not functioning properly, you can experience symptoms like fatigue, weight gain, and brain fog.

That’s where supplements to support your thyroid can come in. They provide your body with the nutrients it needs to support optimal thyroid function.

But with so many options out there, how do you know which supplements are the best? We’ve done the research for you and compiled a list of the top thyroid supplements recommended by experts in the field.

What is the Thyroid?

The thyroid gland is a butterfly-shaped organ located in the neck. It’s part of the endocrine system, which produces hormones that regulate various functions throughout the body. The thyroid gland produces two main hormones, triiodothyronine (T3) and thyroxine (T4), which are essential for regulating metabolism, body temperature, and energy levels.

The thyroid gland is controlled by the pituitary gland in your brain, which tells it when to produce hormones. If the thyroid gland produces too few hormones, you may experience hypothyroidism, which can cause symptoms like fatigue and weight gain. If it produces too many hormones, you may experience hyperthyroidism, which can cause symptoms like weight loss and anxiety.

Fortunately, there are ways to support thyroid function and promote optimal health. Along with a healthy diet and lifestyle, certain supplements can provide your body with the nutrients it needs to support thyroid function and reduce symptoms of thyroid dysfunction.

How Do Thyroid Supplements Work?

Thyroid supplements work by providing the body with essential vitamins, minerals, and nutrients necessary for optimal thyroid function. These supplements can help address any nutrient deficiencies and support overall thyroid health.

Certain nutrients are commonly low in people with hypothyroidism, including selenium, zinc, and iodine. Supplementing with these nutrients can help regulate thyroid function and support the production of thyroid hormones.

In addition to supporting thyroid function directly, some supplements can also promote gut health, which plays a significant role in thyroid function. Supplements like probiotics and digestive enzymes can help reduce inflammation and improve gut bacteria balance, thereby improving thyroid function.

It’s important to note that while supplements can be beneficial, they are not intended to treat or cure medical conditions. They work best as part of a holistic approach to thyroid health that includes thyroid medication (when necessary), diet, stress reduction, and sleep. Consulting with a healthcare professional before starting any supplement regimen is also recommended.

Benefits of Thyroid Supplements

Boost Energy Levels and Metabolism

One of the main benefits of thyroid supplements is their ability to improve energy levels and metabolism. Your thyroid gland plays a crucial role in regulating your body’s metabolism, and when it’s not functioning optimally, you may experience fatigue and sluggishness.

Studies have shown that thyroid supplements containing iodine, selenium, and zinc can help support healthy thyroid function and improve energy levels [1]. In addition, some supplements may also contain herbs like ashwagandha, which has been shown to reduce stress and increase energy levels [2].

With improved energy and metabolism, you can take on the day feeling more alert and focused.

Support Mood and Emotional Wellbeing

Another benefit of thyroid supplements is their ability to support mood and emotional well-being. Research has shown that individuals with hypothyroidism are at a higher risk for depression and anxiety [3].

Thyroid supplements containing selenium and ashwagandha have been shown to help reduce symptoms of anxiety and depression, as well as improve the overall quality of life [4].

By taking thyroid supplements, you may be able to improve your mood and emotional well-being, leading to a happier, more fulfilling life.

Aid in Weight Loss

Thyroid supplements may also be beneficial for those looking to lose weight. Hypothyroidism can lead to weight gain and difficulty losing weight, but by supporting healthy thyroid function with supplements, you may be able to improve your body’s ability to burn fat and lose weight [5].

Supplements containing iodine and selenium have been shown to improve metabolic rate, while ashwagandha may help reduce stress-related weight gain [6]. By combining thyroid supplements with a healthy diet and exercise routine, you may be able to achieve your weight loss goals more effectively.

Promote General Health

Finally, taking thyroid supplements can help improve your overall health and well-being.

The thyroid gland plays a crucial role in regulating many bodily functions, and by supporting its function with supplements, you may be able to reduce your risk of developing certain health conditions. For example, low thyroid function has been linked to an increased risk of heart disease and cognitive decline [7].

You may be able to reduce your risk of developing these and other health issues, leading to a healthier, happier life with the help of thyroid supplements.

Now that we have a better understanding of the thyroid, here are the top natural thyroid-supporting supplements currently on the market.

*Note: We have affiliate links throughout this article, which means we receive a commission if you buy from any of our links. This supports our mission to bring complicated health and fitness info in an entertaining package. And it keeps us from putting up annoying things like banner ads. Those suck.

1) Iodine

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Iodine is an essential mineral that is necessary for the production of thyroid hormones. These hormones play a crucial role in regulating metabolism, growth, and development. When the body doesn’t get enough iodine, it can lead to an enlarged thyroid gland (known as a goiter) and an underactive thyroid gland (known as hypothyroidism).

It’s important to note that iodine supplementation may not be necessary for everyone. In areas where iodine is naturally present in the soil or added to salt, most individuals get enough iodine from their diet.

Additionally, some individuals with thyroid conditions may actually be sensitive to iodine and may need to limit their intake.

The recommended daily allowance (RDA) of iodine varies depending on age and stage of life. For adults, the RDA is 150 micrograms (mcg) per day.

Pure encapsulations iodine is an excellent option if you’re looking to incorporate this into your daily routine.

2) Magnesium

Thorne Magnesium Bisglycinate

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Magnesium is an essential mineral that plays a critical role in various bodily functions, including thyroid health. Magnesium is required for the conversion of the inactive thyroid hormone T4 to the active form T3. Without sufficient magnesium, the body may not be able to produce enough T3, leading to hypothyroidism.

Additionally, magnesium plays a crucial role in managing stress, which is a common trigger for thyroid imbalances.

Stress can cause the body to release cortisol, a hormone that can interfere with the proper functioning of the thyroid gland. Magnesium can help reduce cortisol levels and promote relaxation, reducing the impact of stress on the body and supporting overall thyroid health.

If you’re considering magnesium supplementation, Thorne Magnesium bis-glycinate powder is a perfect place to start. For more options and details on which forms of magnesium or the best, check out our article on the best magnesium supplements.

3) Vitamin D

Performance Lab D3 + K2

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Vitamin D plays a crucial role in thyroid function. It helps regulate the production and conversion of thyroid hormones, and a deficiency in vitamin D3 can lead to thyroid imbalances. Research shows that low vitamin D3 levels are associated with an increased risk of autoimmune thyroid disorders such as Hashimoto’s thyroiditis.

Vitamin D also helps support immune function, which is essential for overall thyroid health. A compromised immune system can increase the risk of thyroid problems, and vitamin D3 can help support immune function to reduce this risk.

It also pairs well with vitamin k2, which is why we recommend this D3+K2 supplement from Performance Lab.

4) Selenium

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Selenium is crucial for thyroid health as it helps produce active thyroid hormones. When deficient, the body produces less active thyroid hormone leading to hypothyroid symptoms. Selenium is also an antioxidant that helps protect the thyroid gland from oxidative stress.

Adequate selenium intake reduces the risk of autoimmune thyroid disorders, and supplementation can lower thyroid antibodies. The RDA for selenium is 55 mcg/day, but some people may benefit from higher doses of 100 to 200 mcg/day.

We loved Upgraded Selenium because it’s made with stabilized nano minerals, which tests for high absorption.

5) Zinc

Thorne, Zinc Picolinate, 15 mg, 60 Capsules

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Zinc is an essential mineral required for thyroid hormone production, including TSH, T3, and T4. It helps regulate the enzymes needed for thyroid hormone synthesis and T4 to T3 conversion. Low zinc levels are linked to hypothyroidism and Hashimoto’s, and hair thinning is a common symptom of hypothyroidism due to a deficiency in zinc.

Zinc and selenium work together to support thyroid function, so supplementation with both can be beneficial. However, it’s important to maintain a balanced zinc-to-copper ratio as too much or too little of one can affect the other.

The recommended daily intake of zinc is 8 mg for women and 11mg for men. If taking zinc supplements, it’s crucial to ensure adequate copper intake as well.

6) Iron

NOW Foods, Iron, 18 mg, 120 Veg Capsules

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Iron is a crucial mineral for various bodily functions, including thyroid health. It’s essential for making thyroid hormones and converting T4 to T3, and low levels can lead to hypothyroidism. Anemia is a common occurrence with hypothyroidism, and it can further impair thyroid function, creating a vicious cycle.

Combining plant-based sources with vitamin C-rich foods enhances the absorption of iron, which is also available from animal-based foods. Women require 18 mg/day of iron, while men require 8mg/day, according to the RDA.

7) Probiotics

Kaged Pro-Biotic

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Gut problems are common precursors to out-of-whack thyroid hormone levels. Probiotics are a simple line of defense to support gut health.

The gut is responsible for dictating thousands of processes in the body; hence why is commonly referred to as the second brain. If the gut is off, there can be a whole host of issues ready to arise, and the thyroid is certainly not immune to being affected.

There are a ton of options out there for probiotics. We like Kaged Pro-Biotic because they use a strain specifically designed to support athletic performance.

8) Vitamin B12

Doctor's Best Fully Active B12

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B vitamins, but especially B12, are critical for a healthy nervous system, energy levels, and overall general health.

Some research suggests that vitamin B12 deficiency has been linked to Hashimoto’s, due to the higher thyroid antibodies. Don’t be surprised if after you take some B12 you get a nice kick of energy.

9) Curcumin

Doctor's Best, High Absorption Curcumin, 500 mg, 120 Capsules

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Curcumin is a powerful antioxidant known for its anti-inflammatory properties to treat common chronic pain issues like osteoarthritis. These anti-inflammatory properties can also play a crucial role to help the fight against autoimmune diseases such as Hashimoto’s.

Supplementing with Curcumin can help reduce the size of thyroid nodules, which are a very common side effect of hypothyroidism.

Tackling inflammation head-on with the active properties found in curcumin is a great natural remedy for addressing the root cause of many chronic diseases. Thorne again has created a really great curcumin product that helps fight off that inflammation.

10) Ashwagandha

Goli Ashwagandha & Vitamin D Gummy

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Ashwagandha root is an herb known for its adaptogenic properties. That is, it may support stress levels and help us manage stress.

As it pertains to thyroid function, some research has looked at this herb for hypothyroidism, with some success.

Goli Nutrition uses KSM-66 ashwagandha, a patented form. They also come in gummies, so that’s fun. Check out this article for more on ashwagandha supplements, check out this a

Looking for Thyroid Supplements?

All the above supplements are used individually and maybe in conjunction to improve thyroid health. However, it can get overwhelming to figure out which of these particular vitamins you may be lacking. Companies have formulated thyroid supplements to provide a combination of different ingredients that help improve thyroid performance.

Here are some top-notch options to choose from…

1) Upgraded Formulas Upgraded Peak Thyroid

Upgraded Formulas Peak Thyroid

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Upgraded formulas Peak Thyroid provides you with a variety of thyroid-supporting ingredients. Per 2 dropper serving, you get a decent amount of selenium, copper, zinc, and iodine to promote healthy thyroid function.

If you read about the ingredients above and are looking for one that checks a lot of boxes, consider Upgarded Peak Thyroid

2) 1Body Thyroid Support

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1 Body Thyroid Support sits at the top of many lists as the best thyroid support supplement currently on the market. Not only do you get the classic iodine, B12, selenium, copper, and zinc support, but you also get special ingredients like kelp, ashwagandha, and bladderwrack.

All these ingredients work together to really kick start your thyroid into top gear, making it an excellent choice if you want to support your thyroid health.

3) Zhou Nutrition Thyroid Support

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Zhou Nutrition is a well-respected supplement brand, and their thyroid support supplement is fantastic. Again we are seeing the kelp (iodine), ashwagandha, and bladderwrack powder complement the main ingredients that support thyroid function.

Lab verified so you are guaranteed a top-quality dietary supplement.

4) LES Labs Thyroid Support

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LES Labs Thyroid support capsules are a 1 and done kind of situation. Per 1 capsule, you are getting vitamins D, E, and B12, with the thyroid super minerals iodine, zinc, and selenium.

Like Pure encapsulations, LES Labs has included turmeric extract and has even added some black pepper extract for better absorption. You get a two-month supply for just under 30 bucks, can’t go wrong with this one.

How We Ranked

To determine the best thyroid supplements, we used a combination of research and expert opinions.

Here’s how we ranked them:

Ingredient Quality

We gave priority to supplements that effectively support thyroid function, and have high-quality ingredients backed by research. We conducted a thorough review of the scientific literature to ensure that the ingredients have been studied and demonstrated positive effects on thyroid health.


We searched for supplements that follow clinical recommendations and have proven to be both safe and effective with appropriate dosages. We analyzed research studies that implemented similar dosages and evaluated clinical guidelines to confirm the appropriateness of the dosages.

Customer Reviews

We analyzed customer reviews to understand the effectiveness of the supplements in real-world situations and to gauge customer satisfaction. We considered both positive and negative reviews to ensure a well-rounded perspective.

Expert Opinions

We consulted with experts in the field of thyroid health to get their opinions on the supplements and to gain insights into their own experiences. We considered the opinions of functional medicine practitioners, naturopathic doctors, and other experts in the field.

Brand Reputation

We considered the reputation of the brand and the manufacturer’s commitment to quality and transparency. We conducted a review of the brand’s website, social media presence, and customer service policies to ensure that they exhibit trustworthiness and a commitment to providing high-quality supplements.

Based on these criteria, we identified the top thyroid supplements that are safe, effective, and supported by research.

We believe that incorporating these supplements into a holistic approach to thyroid health, alongside medication (when necessary), diet, stress reduction, and sleep, can help individuals achieve optimal thyroid function and overall health.


What are some foods to support thyroid health?

Supporting your thyroid with food in addition to supplements is the best way to go. Here are some of the best foods to support your thyroid…

Seafood, nuts and seeds, brands and legumes, eggs, berries, avocados, coconut oil, fermented foods, extra virgin olive oil, leafy greens.

Who should consider taking thyroid supplements?

Individuals with thyroid conditions such as hypothyroidism, hyperthyroidism, or autoimmune thyroid disorders may benefit from taking thyroid supplements.

Additionally, those who are at risk for thyroid conditions, such as women over the age of 60 or individuals with a family history of thyroid disease, may also consider taking supplements.

Are thyroid supplements safe?

When taken as directed, thyroid supplements are generally safe for most individuals.

However, it’s important to talk to your healthcare provider before starting any new supplement, especially if you have a medical condition or take medication.

How long does it take to see results from thyroid supplements?

The time it takes to see results from thyroid supplements can vary depending on the individual and the supplement. Some individuals may notice an improvement in symptoms within a few weeks, while others may take several months to see a noticeable difference.

Can thyroid supplements replace medication?

Thyroid supplements do not replace thyroid medication prescribed by healthcare providers but rather complement the medication and support overall thyroid function.

It’s important to continue taking any prescribed medication and to talk to your healthcare provider before making any changes to your regimen.

Disclaimer: While these ingredients and products may support thyroid function, none of them are FDA-approved to diagnose, treat, cure, or prevent any thyroid-related disease. Talk to your healthcare provider before taking any dietary supplement.

About the Author

Stephanie is a fitness coach and lifelong learner of all things health and fitness. She graduated with her honors specialization in Kinesiology and has worked with hundreds of individuals to reach their physique goals. In her free time, you can catch her on the hiking trails or with her puppy Zoe.

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