Best Natural Selenium Supplements of 2026

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 23, 2026

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Natural selenium supplements are a great way to ensure that your body is getting the essential mineral it needs to function properly. Selenium is a powerful antioxidant that helps to protect cells from damage, supports a healthy immune system, and plays a role in thyroid function. These supplements are made from natural sources of selenium, such as Brazil nuts or yeast, and are available in various forms including capsules, tablets, and liquid drops. They are a safe and effective way to supplement your diet with this important nutrient and can be particularly beneficial for those with low selenium levels or certain health conditions.

At a Glance: Our Top Picks

Bronson Selenium 200 mcg - Essential Trace Mineral for Immune System and Metabolism Support, 250 Vegetarian Capsules Cover #TOP 1
Bronson Selenium 200 mcg - Essential Trace Mineral for Immune System and Metabolism Support, 250 Vegetarian Capsules
ftb score rating icon 9.8
NOW Supplements Selenium (L-Selenomethionine) 100mcg, 100 Tablets Cover #TOP 2
NOW Supplements Selenium (L-Selenomethionine) 100mcg, 100 Tablets
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NOW Foods NAC 600 mg with Selenium 400 Capsules Cover #TOP 3
NOW Foods NAC 600 mg with Selenium 400 Capsules
ftb score rating icon 9.5

Top 10 Natural Selenium Supplements

Bronson Selenium 200 mcg - Essential Trace Mineral for Immune System and Metabolism Support, 250 Vegetarian Capsules

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Bronson Selenium 200 mcg - Essential Trace Mineral for Immune System and Metabolism Support, 250 Vegetarian Capsules Cover
Bronson Selenium 200 mcg – Yeast Free Chelated Amino Acid Complex - Essential Trace Mineral with Superior Absorption, 250 Vegetarian Capsules

The Bronson Selenium 200 mcg is a yeast-free chelated amino acid complex that provides essential micronutrient selenium for immune system, thyroid and metabolism support. Albion Minerals chelated technology ensures superior absorption, stability, quality and easy digestion. It is laboratory tested Non-GMO, Gluten Free, Soy Free supplement in 250 vegetarian capsules. Bronson Vitamins have been a trusted brand since 1960, recommended by top medical professionals.

What We Like
Yeast-free chelated formula
Superior absorption
Gentle on stomach
Supports immune and thyroid health
Non-GMO and lab-tested purity
#TOP 2

NOW Supplements Selenium (L-Selenomethionine) 100mcg, 100 Tablets

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NOW Supplements Selenium (L-Selenomethionine) 100mcg, 100 Tablets Cover
NOW Supplements, Selenium (L-Selenomethionine) 100 mcg, Essential Mineral*, 100 Tablets

If you're looking for a high-quality selenium supplement, NOW Supplements Selenium is an excellent choice. Selenium is an essential trace mineral that can be found naturally in various foods. This supplement provides 100 mcg of selenium per tablet, making it easy to get your daily dose. It is yeast-free and suitable for vegans, soy-free, non-GMO, and kosher. Take 1 to 2 tablets daily with food. NOW Supplements is a family-owned and operated company that has been producing quality products since 1968. The product is GMP Quality Assured and packaged in the USA.

What We Like
Trusted American brand
Third-party tested quality
Easy to swallow tablets
Good value for money
Supports thyroid health
#TOP 3

NOW Foods NAC 600 mg with Selenium 400 Capsules

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NOW Foods NAC 600 mg with Selenium 400 Capsules Cover
Now NAC 600 mg, 400 Capsules, N-Acetyl Cysteine with Selenium

The NOW NAC 600 mg Selenium supplement offers a powerful dose of N-acetyl cysteine, a stable form of the amino acid cysteine that supports your body's protein structure and helps produce the important antioxidant glutathione. With 25 mcg of added Selenium, this product also assists in creating essential enzymes that keep your body functioning well. Plus, when you choose this 400-capsule bottle, you contribute to a greener planet since the company plants one tree for every 20 bottles sold. This eco-friendly approach makes it easy for you to support both your health and the environment.

What We Like
Easy to swallow capsules
No aftertaste
Capsules not broken or damaged
Supports immune health
Good value price
#TOP 4

Micro Ingredients Selenium 200mcg Softgels with Coconut Oil

BA-MI-SEL500
Micro Ingredients Selenium 200mcg Softgels with Coconut Oil Cover
Micro Ingredients Selenium Supplements for Women & Men 200mcg, 500 Softgels with Coconut Oil | Essential Trace Mineral as Selenomethionine | Antioxidant for Energy, Heart, & Immune Support

The Micro Ingredients Selenium Softgels provide a highly absorbable form of selenium called L-Selenomethionine, which your body easily recognizes and uses to maintain overall health. Each softgel is combined with coconut oil to help your body absorb the nutrient more efficiently, so you get the most benefit from each dose. With 500 softgels in a pouch, you have a convenient one-a-day supply that supports your energy, immune system, heart, and cellular health. This supplement helps activate glutathione, a powerful antioxidant in your body, helping you stay energized and healthy every day.

What We Like
Pleasant smell and taste
Easy to swallow capsules
Clean, transparent ingredients
Good bioavailability
High product quality
#TOP 5

Triquetra Health Total Selenium

Triquetra Health Total Selenium Cover
Total Selenium - 200 mcg, Plant-Based Selenium - Full Spectrum, Contains 4 Essential Organic Forms of Selenium Including Selenomethionine - Derived from Garlic - 60 Capsules

Total Selenium is a 100% plant-based selenium supplement brought to you by Triquetra Health. Derived from garlic using an innovative organic farming process, this supplement offers the most nutrient-dense form of selenium available. It contains all four essential organic forms of selenium, including selenomethionine, which allows for broad-spectrum health benefits. With a clinically validated dose of 200 mcg per capsule, Total Selenium provides the recommended amount for optimal health. Additionally, the organic forms of selenium in this supplement are highly bioavailable, meaning they are easily recognized and utilized by the body. Made in the USA in a cGMP and organic certified facility, Total Selenium is also third-party tested for toxins and microbials. This vegan-friendly supplement is GMO-free, soy-free, gluten-free, preservative-free, and additive-free.

What We Like
100% Plant Based
Full-Spectrum Selenium
200mcg Selenium Per Dose

Solaray Yeast Free Selenium 200mcg, Healthy Immune System Support, 90 VegCaps

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Solaray Yeast Free Selenium 200mcg, Healthy Immune System Support, 90 VegCaps Cover
Solaray Yeast Free Selenium 200mcg, Selenium Capsules for Healthy Thyroid Function & Immune Support, High Absorption Supplement, Vegan, 90 Servings, 90 VegCaps

Support your immune system and thyroid function with Solaray Yeast Free Selenium 200mcg. Its high potency formula provides absorbable selenium in its superior form selenomethionine. Selenium is essential for the healthy functioning of the thyroid gland and may also support a healthy immune system, antioxidant processes, and cellular health. Solaray is committed to a cleaner planet by using 100% post-consumer resin recycled plastic bottles. This vegan and yeast-free supplement is lab verified for potency and purity and made in the USA.

What We Like
Provides high potency and absorbable selenium in its superior form selenomethionine
Supports a healthy immune system, antioxidant processes, and cellular health
Committed to a cleaner planet by using 100% post-consumer resin recycled plastic bottles
Vegan and yeast-free supplement, lab verified for potency and purity and made in the USA

Triquetra Health Selenium - Sublingual Liquid Concentrate

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2 Fl Oz (Pack of 1)
Triquetra Health Selenium - Sublingual Liquid Concentrate Cover
Selenium - 200 mcg, Selenomethionine Form, 300 Servings - Vegan, Glass Bottle, Yeast Free - Sublingual Liquid Concentrate - Antioxidant, Supports Immunity, Thyroid Health (2 oz.)

Triquetra Health Selenium is a sublingual liquid concentrate that comes in a glass bottle with 300 servings. It contains 200 mcg of Selenomethionine form of selenium per serving, which has the highest absorption rate compared to other forms of selenium. The liquid form is highly versatile and easy to adjust dosage size. It is also a potent antioxidant that supports thyroid function, heart health, brain function, immunity, and prostate health. This vegan, soy-free, filler-free, preservative-free, and gluten-free supplement is produced in cGMP certified facilities in the USA and tested by the most stringent labs.

What We Like
Highly absorbable Selenomethionine form of selenium
Sublingual liquid concentrate for immediate absorption
Easy to adjust dosage size, highly versatile liquid drops
Supports thyroid function, heart health, brain function, immunity, and prostate health
Vegan, soy-free, filler-free, preservative-free, and gluten-free supplement
#TOP 8

NOW Supplements, Selenium 200 mcg, 90 Veg Capsules

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NOW Supplements, Selenium 200 mcg, 90 Veg Capsules Cover
NOW Foods Supplements, Selenium (L-Selenomethionine) 200 mcg, Essential Mineral*, 90 Veg Capsules

NOW Selenium 200 mcg is an essential trace mineral supplement that comes in veggie capsules. Selenium is naturally found in Brazil nuts, organ meats, seafood, and wheat germ. It provides numerous benefits for your health. Taking 1 capsule daily with a meal is all you need to do to ensure you're getting enough of this essential mineral. NOW Selenium 200 mcg is yeast-free and suitable for vegans. It is also classified as soy-free, kosher, halal, and non-GMO. The GMP Quality Assured certification guarantees that every aspect of the manufacturing process has been examined for stability, potency, and product formulation. Packaged in the USA by a family-owned company, NOW Selenium 200 mcg is a reliable choice for your supplement needs.

What We Like
Essential trace mineral
Vegan and soy-free
GMP Quality Assured
#TOP 9

Copper Protocol Mineral Supplement Tablets

Copper Protocol
Copper Protocol Mineral Supplement Tablets Cover
Copper Protocol Copper Supplements for Women and Men (90 Capsules) Boosts Energy, Nourishes Body, Anti-Aging Formula, Includes Vitamin C, Zinc & Selenium, Non-GMO, Made in USA - GMP Certified

Copper Protocol Tablets offer a balanced blend of essential minerals to support your health. Each tablet provides 3mg of copper and 9mg of zinc, which are vital for immune function and overall well-being. With 100mg of vitamin C, you can boost your antioxidant defenses and promote skin health. Additionally, the inclusion of selenium, boron, and molybdenum ensures you receive a comprehensive range of nutrients. With 90 tablets in each bottle, you enjoy a convenient three-month supply, making it easy to integrate these supplements into your daily routine.

What We Like
Essential mineral blend
Convenient three-month supply
High-quality ingredients
Manufactured in the USA
Customer satisfaction guarantee
#TOP 10

Rootcology by Dr. Izabella Wentz

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Rootcology by Dr. Izabella Wentz Cover
Rootcology by Dr. Izabella Wentz | Selenium + Myo-Inositol | Comprehensive Blend to Promote Hormone Balance and Immune System Health | 60 Capsules

Features
Supports Immune Function: Provides Essential Nutrients To Aid In Optimal Immune System Performance.*
Supports Thyroid Health: Formulated To Promote Healthy Thyroid Function With A Synergistic Blend Of Selenium And Myo-Inositol.*
Rootcology Selenium + Myo-Inositol Is Gluten Free, Dairy Free, Soy Free, Non-GMO, And Shellfish Free. All Rootcology Products Are Lab Tested And Use Pure Formulas.
Promotes Cognitive Function: Supports Brain Health By Providing Nutrients Crucial For Mental Clarity And Focus.*
Please Note: Rootcology's Selenium + Myo-Inositol Includes Selenomethionine, Which Is A Naturally Sulfur-Based Ingredient. Sulfur Has A Distinctive, Sometimes Sharp Scent. You Might Notice The Strength Of The Smell Varies Slightly From Batch To Batch, But Rest Assured, This Is Expected And Does Not Affect The Quality Or Effectiveness Of The Supplement.
Most Selenium Supplements—unless They're Tablet Forms—have A Similar Aroma. The Slight Odor Is Common With Selenomethionine. It Doesn't Mean There's Anything Wrong With The Supplement, It's Simply The Nature Of The Ingredient.
Created By A Pharmacist & Thyroid Expert: Dr. Izabella Wentz, Pharm.D., FASCP Is A Passionate, Innovative And Solution Focused Clinical Pharmacist And NY Times Best Selling Author. Dr. Wentz Is Well Versed In Finding And Evaluating Emerging Research To Help Address Her Clients' Unique Challenges. Although Trained As A Pharmacist, She Is An Ardent Champion For Lifestyle Interventions, Which Often Help Patients Much More Than Any Medications.
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Frequently Asked Questions (FAQs)

1. What is the best form of selenium to take?

What is the best type of selenium supplement? Selenium in the form of selenomethionine may be the best option. This form has been shown to have superior absorption rates compared with other forms of selenium used in supplements, including sodium selenite ( 3 , 8 , 9 ).

2. How can I increase selenium naturally?

Many whole grains and dairy products, including milk and yogurt, are good sources of selenium. Some ready-to-eat breakfast cereals are fortified with selenium, and some fruits and vegetables contain selenium. Pork, beef, turkey, chicken, fish, shellfish, and eggs contain high amounts of selenium.

3. What is the supplement selenium good for?

Selenium plays an important role in the health of your immune system. This antioxidant helps lower oxidative stress in your body, which reduces inflammation and enhances immunity. Studies have demonstrated that increased blood levels of selenium are associated with enhanced immune response.

4. What are the symptoms of selenium deficiency?

What are the symptoms?. infertility in men and women.muscle weakness.fatigue.mental fog.hair loss.weakened immune system.

Editor's Notes

During our natural selenium supplement research, we found 24 natural selenium supplement products and shortlisted 10 quality products. We collected and analyzed 93,487 customer reviews through our big data system to write the natural selenium supplements list. We found that most customers choose natural selenium supplements with an average price of $20.03.

The natural selenium supplements are available for purchase. We have researched hundreds of brands and picked the top brands of natural selenium supplements, including Bronson, NOW Foods, Micro Ingredients, Triquetra Health, SOLARAY. The seller of top 1 product has received honest feedback from 12,582 consumers with an average rating of 4.9.

Written by
Elisa Drew Avatar

Elisa Drew is a really professional copywriter specializing in baby products with five years of experience working as a pediatrician once. She has published a series of baby books purchased by over thirty thousand people in the United States.