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Top 8 Best Selenium and Zinc Supplements for Thyroid in 2026

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Safeguarding the well-being of your thyroid largely depends on crucial minerals like selenium and zinc. This vital gland is responsible for generating hormones that manage your metabolism. A lack of selenium and zinc could possibly result in a poorly functioning thyroid. Hence, adding a supplement that contains selenium and zinc could be beneficial in maintaining thyroid health and warding off any potential deficiencies.

When it comes to choosing the best selenium and zinc supplement for thyroid health, there are a few critical factors to consider. Firstly, it’s important to choose a supplement that contains the appropriate dosage of selenium and zinc. The recommended daily intake of selenium is 55 mcg for adults, while the recommended daily intake of zinc is 8-11 mg for adults. However, taking too much of these minerals can be harmful, so it’s essential to choose a supplement that provides the appropriate dosage.

Another critical factor to consider is the form of selenium and zinc used in the supplement. Some forms of these minerals are more easily absorbed by the body than others. For example, selenium in the form of selenomethionine is more bioavailable than other forms of selenium. Similarly, zinc in the form of zinc picolinate is more easily absorbed than other forms of zinc.

After researching and testing various selenium and zinc supplements for thyroid health, we have identified the top products that provide the appropriate dosage and use highly bioavailable forms of these minerals. In the following sections, we will provide an in-depth review of each product to help you make an informed decision.

Best Selenium and Zinc Supplements for Thyroid

We understand the importance of maintaining a healthy thyroid function, and we know that the right supplements can aid in achieving this goal. Selenium and Zinc are two essential minerals that play a vital role in thyroid health. Selenium is necessary for the production of thyroid hormones, while Zinc helps in the conversion of T4 hormone to T3 hormone, which is more active.

After thorough research and analysis, we have curated a list of the best Selenium and Zinc supplements for thyroid. Our recommendations are based on the quality of the ingredients, effectiveness, and customer reviews. We are confident that these supplements will help support your thyroid health and improve your overall well-being.

1. Clean Nutraceuticals ThyroDefend

Our Pick

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If you’re looking for a powerful all-in-one thyroid supplement, Clean Nutraceuticals ThyroDefend is an excellent choice.

Pros

  • Combines multiple thyroid-supporting ingredients into one convenient capsule
  • Contains high doses of zinc, selenium, and iodine
  • Made in the USA with trusted ingredients

Cons

  • Contains many ingredients, which may be overwhelming for some users
  • May cause side effects in some individuals, such as upset stomach or headaches
  • More expensive than some other thyroid supplements on the market

We’ve been using Clean Nutraceuticals ThyroDefend for a few weeks now and have noticed a significant improvement in our energy levels and overall wellbeing. The supplement contains a blend of thyroid-supporting ingredients, including zinc, selenium, iodine, and ashwagandha, that work together to keep our thyroid functioning properly.

One of the standout features of this supplement is the high doses of zinc, selenium, and iodine it contains. These three minerals are essential for thyroid health, and Clean Nutraceuticals ThyroDefend provides them in optimal amounts. Additionally, the supplement contains a blend of other herbs and minerals, including bladderwrack, turmeric, and cayenne pepper, that provide additional benefits for overall health.

While the number of ingredients in Clean Nutraceuticals ThyroDefend may be overwhelming for some users, we appreciate that the supplement provides a comprehensive solution for thyroid support. The only downside is that the supplement is more expensive than some other thyroid supplements on the market. However, we believe that the quality of the ingredients and the convenience of having multiple ingredients in one capsule make it worth the price.

Overall, if you’re looking for a high-quality thyroid supplement that provides comprehensive support for your thyroid, we highly recommend Clean Nutraceuticals ThyroDefend.

2. Dr. Mercola Zinc Plus Selenium

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We highly recommend Dr. Mercola Zinc Plus Selenium for those seeking a high-quality supplement that supports immune health.

Pros

  • This supplement contains Zinc Glycinate Chelate, a high-potency source of zinc that is formulated for enhanced absorption.
  • The addition of copper ensures broad-balanced support.
  • Third-party NSF contents certification ensures health and safety.

Cons

  • Some users may find the price to be slightly higher than other similar products.
  • The recommended dosage is three capsules per day, which may be inconvenient for some users.
  • The capsules are relatively large and may be difficult for some people to swallow.

Dr. Mercola Zinc Plus Selenium is a powerful antioxidant and mineral blend that supports healthy cognitive function and immune responses. The micronutrient copper is added to the formula for broad-balanced support. We appreciate that Dr. Mercola’s physician-formulated products are only made with ingredients that meet premium quality standards.

The Best Sellers Rank of this product is in the top 100 in Health & Household, and it comes in an unflavored capsule form. The glass bottle packaging is a nice touch, as it reflects the seller’s commitment to quality.

Overall, Dr. Mercola Zinc Plus Selenium is a high-quality supplement that is worth considering for those seeking immune support.

3. 1 Body Thyroid Support Supplement with Iodine

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If you’re looking to support your thyroid function, the 1 Body Thyroid Support Supplement with Iodine is a great choice.

Pros

  • Supports healthy thyroid function
  • Promotes natural energy levels
  • Contains key nutrients for cognitive function

Cons

  • Contains cayenne pepper, which may not be suitable for everyone
  • Some users may experience mild side effects
  • May take time to see noticeable results

We’ve been using this supplement for a few weeks now and have noticed improved energy levels and better cognitive function. The blend of key nutrients, including ashwagandha root, magnesium, bladderwrack, and selenium, work together to promote healthy thyroid function and support overall wellness.

One thing to keep in mind is that this supplement contains cayenne pepper, which may not be suitable for everyone. Some users may also experience mild side effects, such as upset stomach or headaches. However, these side effects are generally rare and mild.

Overall, we would recommend the 1 Body Thyroid Support Supplement with Iodine to anyone looking to support their thyroid function and improve their overall health.

4. MegaFood Thyroid Strength

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If you’re looking for a supplement that supports thyroid health, MegaFood Thyroid Strength is an excellent choice.

Pros

  • Crafted with Iodine, Zinc, Selenium, and Copper, along with L-tyrosine, to help nourish your thyroid
  • Suitable for vegetarian diets
  • Tested for over 125 chemical substances; Made without 9 allergens: milk, eggs, peanuts, tree nuts, soy, wheat, fish, shellfish, and sesame; Certified Kosher

Cons

  • May not be suitable for those with specific dietary restrictions
  • Some users may experience mild side effects
  • May take a few weeks to see noticeable results

We’ve been using MegaFood Thyroid Strength for a while now, and we’ve noticed a significant improvement in our overall health. This supplement is packed with essential minerals, including selenium and zinc, which are known to support thyroid health and metabolic activity. Additionally, the inclusion of Sensoril ashwagandha, a traditional herb, supports optimal energy levels, mental cognition, cardiovascular health, endothelial function, and your lipid profile.

One of the best things about MegaFood Thyroid Strength is that it can be taken at any time of day, with or without food. This makes it incredibly convenient for those with busy schedules. We also appreciate that it’s suitable for vegetarian diets and is free from common allergens.

While we did experience some mild side effects when we first started taking this supplement, such as headaches and stomach upset, these symptoms subsided after a week or so. We also noticed that it took a few weeks to see noticeable results, so it’s important to be patient and consistent with your use of this supplement.

Overall, we highly recommend MegaFood Thyroid Strength to anyone looking for a high-quality supplement to support thyroid health. With its rich blend of minerals and traditional herbs, this supplement is a great choice for anyone looking to improve their overall health and wellbeing.

5. Zhou Thyroid Support Complex

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We highly recommend the Zhou Thyroid Support Complex for those looking to boost their energy levels and improve mental clarity. This supplement is formulated with iodine, magnesium, zinc, and selenium, which are essential nutrients for thyroid function.

Pros

  • Supports Focus and Clarity: The Zhou Thyroid Support Complex helps clear mental fog and boost focus when the thyroid is supported. It increases productivity and helps conquer daily tasks with ease.
  • Wake Up Rested and Energized: The iodine in the Zhou Thyroid Support Complex gives the thyroid gland the nutrients it craves, helping you wake up more rested and energized.
  • Clean Formula for Men and Women: This vegetarian-friendly, gluten-free, soy-free, non-GMO formula contains an all-natural blend of vitamins, minerals, herbs, and amino acids crafted by experts in modern nutritional science.

Cons

  • Capsules are Rather Large: The capsules in the Zhou Thyroid Support Complex are rather large, which may be difficult for some people to swallow.
  • Multiple Capsules Per Dose: You have to take multiple capsules for a dose, so be aware of that fact.
  • Powdered Film: Some users reported that something spilled in their last order, and everything was covered with a powdered film.

The Zhou Thyroid Support Complex is a great choice for those looking for a high-quality thyroid supplement. It is based in the heart of Utah, and Zhou Nutrition uses only the highest-quality ingredients in a facility following GMP (good manufacturing practices). Zhou Nutrition tests everything at their lab in Utah to ensure confidence in safety and efficacy.

In conclusion, we highly recommend the Zhou Thyroid Support Complex for those looking to improve their thyroid function and boost their energy levels and mental clarity.

6. Healths Harmony Thyroid Support with Iodine

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If you’re looking for a thyroid supplement that will give you more energy and improve your thyroid function, you should consider Healths Harmony Thyroid Support with Iodine.

Pros

  • The bottle contains a two month supply, which is twice as much as most other thyroid supplements on the market.
  • The supplement contains 14 key ingredients, including vitamins, minerals, and herbs, that are known to support thyroid health.
  • The capsules are vegan, non-GMO, and made in a CGMP-certified facility in the USA.

Cons

  • Some customers have reported stomach pain after taking the supplement.
  • The capsules are large and may be difficult to swallow for some people.
  • The supplement may take several weeks to start working, so it requires patience and consistency.

We have been using Healths Harmony Thyroid Support with Iodine for several months and have noticed a significant improvement in our energy levels and overall well-being. The supplement contains a potent blend of vitamins, minerals, and herbs that are known to support thyroid function, and the two month supply ensures that we never run out.

One of the key ingredients in the supplement is iodine, which is essential for thyroid health. The supplement also contains ashwagandha root, which is known to reduce stress and anxiety, and cayenne pepper powder, which improves blood flow and helps to distribute nutrients throughout the body.

While the supplement may take several weeks to start working, we have found that it is well worth the wait. We have more energy, less brain fog, and feel more alert and focused throughout the day. We also appreciate that the capsules are vegan and non-GMO, and that they are made in a facility that adheres to strict quality standards.

Overall, we highly recommend Healths Harmony Thyroid Support with Iodine to anyone who is looking for a natural and effective way to support their thyroid function. It’s a great product that delivers real results, and we are confident that you will be satisfied with your purchase.

7. ForestLeaf Thyroid Support Supplement

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If you’re looking for a natural way to support your thyroid, then ForestLeaf Thyroid Support Supplement is worth considering.

Pros

  • Boosts energy levels, concentration, and metabolism
  • Contains a powerful blend of thyroid vitamins and minerals
  • Safe ingredients, free from most allergy-inducing ingredients

Cons

  • Takes a week or so to fully work or feel it
  • Results may not be as obvious with things like this
  • May cause abdominal discomfort in some people

We’ve been taking ForestLeaf Thyroid Support Supplement for a few weeks now, and we’ve noticed an increase in our energy levels and concentration. The blend of thyroid vitamins and minerals, including iodine, B12, zinc, and selenium, along with ashwagandha, schizandra, and coleus forskohlii, has been effective in supporting our thyroid health.

The supplement is 100% vegetarian and free from most allergy-inducing ingredients, including wheat, gluten, soy, milk, egg, fish, and tree nut. However, it’s always best to consult with your healthcare provider and make the necessary lifestyle changes first before introducing any supplements to your regimen.

While it may take a week or so to fully work or feel it, we feel that the benefits are worth the wait. However, it’s important to note that the results may not be as obvious with things like this.

Overall, we recommend ForestLeaf Thyroid Support Supplement for anyone looking for a natural way to support their thyroid health.

8. DR. BO Thyroid Support Supplement

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If you’re looking for a natural thyroid supplement to support your energy, mood, metabolism, and hormone balance, DR. BO Thyroid Support Supplement is a great option to consider.

Pros

  • The advanced formula contains a blend of herbal ingredients, vitamins, and minerals that are known to support thyroid health.
  • The supplement is designed to provide a balance of nutrients that work together to support energy and focus.
  • The capsules are easy to swallow and come in a convenient 60-count bottle.

Cons

  • The supplement may not work for everyone, and some users may not notice significant improvements in their energy levels or thyroid function.
  • The formula contains a variety of ingredients, which may make it difficult to determine which ones are most effective.
  • The product is not suitable for vegans or vegetarians, as it contains gelatin capsules.

We’ve tried DR. BO Thyroid Support Supplement and have found it to be a reliable and effective option for supporting thyroid health. The blend of ingredients, including iodine, selenium, and ashwagandha, work together to provide a range of benefits, from boosting energy and focus to supporting hormone balance and metabolism.

One of the things we appreciate about this supplement is that it contains a blend of vitamins and minerals, rather than just pure iodine, selenium, or zinc. This means that you’re getting a more comprehensive and balanced approach to thyroid support.

The capsules are easy to swallow and don’t have a strong taste or odor. We also appreciate that the supplement is made without any GMOs, and the bottle contains a 60-day supply, making it a convenient and cost-effective option.

Overall, if you’re looking for a natural thyroid supplement that can support your energy, mood, and metabolism, DR. BO Thyroid Support Supplement is definitely worth considering. Just be aware that it may not work for everyone, and it’s important to talk to your doctor before starting any new supplement regimen.

Buying Guide

When looking for the best selenium and zinc supplement for thyroid, there are a few key features to consider. We recommend looking for products that meet the following criteria:

Quality Ingredients

It is important to choose a supplement that contains high-quality ingredients. Look for products that use organic or non-GMO ingredients, and avoid those that contain fillers or artificial additives. Reading the label and doing research on the manufacturer can help ensure that you are getting a quality product.

Dosage

The recommended dosage of selenium and zinc varies depending on age, gender, and other factors. It is important to choose a supplement that provides the appropriate dosage for your needs. Be sure to read the label carefully and consult with a healthcare professional if you are unsure about the appropriate dosage.

Absorption

The bioavailability of the supplement is also an important factor to consider. Look for products that use forms of selenium and zinc that are easily absorbed by the body. For example, selenium in the form of selenomethionine and zinc in the form of zinc picolinate are often more easily absorbed than other forms.

Price

Price is also an important consideration when choosing a supplement. While it may be tempting to choose the cheapest option available, it is important to remember that quality ingredients and high bioavailability often come at a higher cost. We recommend choosing a product that is reasonably priced while still meeting your quality standards.

In summary, when choosing a selenium and zinc supplement for thyroid health, it is important to consider the quality of the ingredients, appropriate dosage, bioavailability, and price. By keeping these factors in mind, you can make an informed decision and choose a product that meets your needs.

Frequently Asked Questions

What are the potential side effects of taking selenium and zinc supplements for thyroid health?

When taken in appropriate doses, selenium and zinc supplements are generally safe and well-tolerated. However, taking too much of these supplements can lead to adverse effects such as nausea, vomiting, diarrhea, abdominal pain, and headaches. It is important to follow the recommended dosage guidelines and consult with a healthcare professional before starting any new supplement regimen.

How do selenium and zinc contribute to thyroid function?

Selenium and zinc are essential minerals that play important roles in thyroid function. Selenium is required for the production of thyroid hormones and helps to regulate their metabolism, while zinc is involved in the conversion of thyroid hormones into their active form. Both minerals also have antioxidant properties that help to protect the thyroid gland from oxidative stress.

Can taking selenium and zinc supplements aid in weight loss for thyroid patients?

While selenium and zinc supplements are not specifically marketed as weight loss aids, they may indirectly support weight loss efforts in individuals with thyroid issues. This is because optimal thyroid function is necessary for maintaining a healthy metabolism and regulating body weight. However, it is important to note that supplements alone are unlikely to lead to significant weight loss and should be used in conjunction with a healthy diet and exercise regimen.

What are the best sources of selenium and zinc for those with thyroid issues?

Good dietary sources of selenium include Brazil nuts, seafood, poultry, and eggs, while zinc can be found in oysters, beef, chicken, and pumpkin seeds. However, it can be difficult to obtain adequate amounts of these minerals through diet alone, especially for individuals with thyroid issues. In these cases, supplements may be necessary to ensure optimal levels of selenium and zinc.

What form of zinc is most beneficial for supporting thyroid health?

Zinc supplements are available in several different forms, including zinc gluconate, zinc citrate, and zinc picolinate. While all forms of zinc can be beneficial for thyroid health, zinc picolinate is generally considered to be the most bioavailable and effective form.

Where can I find high-quality selenium and zinc supplements for thyroid support?

High-quality selenium and zinc supplements can be found at most health food stores and online retailers. It is important to choose a reputable brand and read product labels carefully to ensure that the supplements contain the appropriate dosage of each mineral. Additionally, it is recommended to consult with a healthcare professional before starting any new supplement regimen.

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