Best Selenium Supplements of 2025

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 15, 2025

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Selenium supplements are a popular dietary supplement that is believed to support overall health and well-being. Selenium is a trace mineral that is essential for the proper functioning of many bodily processes, including immune function, thyroid function, and antioxidant activity. Selenium supplements are available in a variety of forms, including capsules, tablets, and liquids, and can be found at most health food stores and online retailers. While selenium is an important nutrient, it is important to speak to a healthcare provider before taking any new supplements to ensure that they are safe and appropriate for individual needs.

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
Thorne Selenium - Antioxidant Support Supplement Cover #TOP 2
Thorne Selenium - Antioxidant Support Supplement
ftb score rating icon 9.7
Nature's Bounty Selenium 200 mcg Tablets Cover #TOP 3
Nature's Bounty Selenium 200 mcg Tablets
ftb score rating icon 9.5

Top 10 Selenium Supplements

#TOP 1

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
No unpleasant smell
No bad taste
Effective selenium supplement
What We Don't Like
One capsule not full
#TOP 2

Thorne Selenium - Antioxidant Support Supplement

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Thorne Selenium - Antioxidant Support Supplement Cover
Thorne Selenium - 200 mcg Selenium Supplement for Antioxidant Support - 60 Capsules

This Selenium supplement supports normal thyroid function in healthy individuals and reduces oxidative damage caused by toxins, smoking, alcohol use and stress. It also promotes healthy skin, hair, and cognitive function. It is an essential nutrient to help maintain optimal health and wellness, and is free from gluten, eggs, tree nuts, peanuts, dairy, soy, fish, or shellfish. Thorne is a trusted brand, chosen by champions and trusted by 100+ pro teams, and the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. It is also a proud partner of 11 U.S. Olympic Teams.

What We Like
Supports thyroid health
Easy to take
No upset stomach
Trusted brand reputation
What We Don't Like
Slightly unpleasant taste
Strong smell
#TOP 3

Nature's Bounty Selenium 200 mcg Tablets

Nature's Bounty Selenium 200 mcg Tablets Cover
Nature's Bounty Selenium, Supports Prostate and Immune System Health, 200 mcg, 100 Tablets

Nature's Bounty Selenium Tablets provide support for the prostate and immune system with a clinically studied dosage of 200 mcg of Selenium. These vegetarian-friendly tablets offer the convenience of just one tablet a day. Selenium is known for its benefits in maintaining a healthy prostate and boosting the immune system. With Nature's Bounty Selenium Tablets, you can easily incorporate this essential mineral into your daily routine to support your overall health and well-being.

What We Like
Long-term user satisfaction
Natural source from brewers yeast
Improves HDL cholesterol levels
Easy to take small pills
Excellent price value
What We Don't Like
Inconclusive cognitive decline effects
Conflicting thyroid study results
#TOP 4

NOW Selenium 100 mcg, 250 Tablets

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NOW Selenium 100 mcg, 250 Tablets Cover
NOW Foods Supplements, Selenium (L-Selenomethionine) 100 mcg, Essential Mineral*, 250 Tablets

NOW Selenium 100 mcg is an essential trace mineral supplement that provides 100 mcg of selenium per tablet. Selenium is naturally found in Brazil nuts, organ meats, seafood, and wheat germ. This yeast-free supplement is easy to incorporate into your daily routine - simply take 1 tablet 1 to 2 times daily with food. NOW Selenium 100 mcg is vegan, soy free, non-GMO, and kosher, making it suitable for a variety of dietary preferences. With the NPA A-rated GMP certification, you can trust that this supplement has undergone rigorous testing for stability, potency, and product formulation. Packaged in the USA by a family owned and operated company since 1968, NOW Selenium 100 mcg is a reliable choice for your selenium needs.

What We Like
Good quality
Easy on the stomach
Affordable price
On-time delivery
Helps with thyroid health
What We Don't Like
Need more time to evaluate
#TOP 5

Life Extension Super Selenium Complex

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Life Extension Super Selenium Complex Cover
Life Extension Super Selenium Complex with Vitamin E – Cellular Health & Longevity Support – Gluten-Free, Non-GMO, Vegetarian –100 Capsules(Pack of 1)

Life Extension Super Selenium Complex is a dietary supplement that contains three forms of selenium and vitamin E. This supplement is designed to promote cellular health and longevity support by helping your body fight against oxidative stress that contributes to the aging process. Selenium may also support healthy thyroid, immune function, brain, and heart health. Made with only the finest raw ingredients with the purity and potency your body deserves, this supplement is non-GMO, gluten-free, and manufactured in the USA.

What We Like
Long-term customer satisfaction
Effective energy boost
Vegetable and gluten-free
Positive physician endorsement
Quick delivery and good packaging
What We Don't Like
Potential hair loss with high dosage
Product sensitivity to heat
#TOP 6

Pure Encapsulations Selenium Supplement

Pure Encapsulations Selenium Supplement Cover
Pure Encapsulations Selenium - 200 mcg - for Healthy Cellular Function, Immune System & Antioxidant Defenses - Mineral Supplement - Vegan & Gluten Free - 60 Capsules

Get immune system support, healthy blood flow, and antioxidant support with Pure Encapsulations Selenium Supplement. It helps protect normal cell function, promotes healthy blood flow, and scavenge free radicals. The supplement is made with premium ingredients and is free from wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.

What We Like
Fast delivery
High-quality product
Repeat customer
Effective results
What We Don't Like
Unidentified object in bottle
#TOP 7

Horbäach Selenium 200mcg Tablets

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Horbäach Selenium 200mcg Tablets Cover
Horbäach Selenium 200mcg Supplement | 120 Tablets | Non-GMO and Gluten Free

The Horbäach Selenium Tablets provide a vital trace mineral that supports your overall health. Each tablet contains 200 mcg of Selenium, making it easy for you to incorporate this essential nutrient into your daily routine. Crafted with care, the formula emphasizes purity and potency, ensuring you receive a high-quality supplement. Additionally, these tablets are free from common allergens and artificial additives, allowing you to feel confident about what you consume.

What We Like
High quality product
Effective for thyroid function
Easily digestible and small
Good value for price
Improves skin complexion
#TOP 8

Nutricost Selenium 200mcg, 240 Vegetarian Capsules

NTC179101
Nutricost Selenium 200mcg, 240 Vegetarian Capsules Cover
Nutricost Selenium 200mcg, 240 Vegetarian Capsules, Non-GMO, Gluten Free L-Selenomethionine

Nutricost Selenium 200mcg supplement comes in a bottle containing 240 vegetarian capsules, with 200mcg of selenium per capsule. It provides 240 servings, with just one capsule per serving. The product is non-GMO, gluten-free, soy-free, and contains vegetarian capsules that are 3rd party tested. The product is manufactured in a GMP compliant, FDA registered facility.

What We Like
Cost-effective
High potency
Positive immune support
Pure and concentrated
Smooth transaction
What We Don't Like
Uncertain effectiveness
#TOP 9

NOW Foods Selenium 200 mcg VCaps

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NOW Foods Selenium 200 mcg VCaps Cover
NOW Foods Selenium 200 mcg VCaps, 180 ct

This Selenium supplement is manufactured in the United States and comes in a package dimension of 2.5"L x 2.5"W x 3.2"H. Even during the summer months, Amazon stores and ships the product according to the manufacturer's recommendations. It is a great source of Selenium for people who need this essential mineral.

What We Like
Good quality supplements
Affordable pricing
Easy to swallow capsules
Supports immune function
Reputable brand
What We Don't Like
Individual results may vary
Consult healthcare professional recommended
#TOP 10

Carlyle's Selenium 200mcg Tablets

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Carlyle's Selenium 200mcg Tablets Cover
Carlyle Selenium Supplement 200mcg | 270 Tablet Capsules | Essential Trace Mineral | Vegetarian, Non-GMO, Gluten Free

Carlyle's Selenium 200mcg Tablets are an essential trace mineral and element supplement, providing strong support for healthy living. With a potent formula of 200 mcg of selenium per tablet and free of gluten, wheat, lactose, soy, artificial flavor, preservatives, and non-GMO, Carlyle's Selenium 200mcg Tablets are rooted in wellness and manufactured with trusted ingredients for superior quality.

What We Like
Supports muscle health
High-quality products
Comparable pricing
Effective for pets
Improves clarity and metabolism
What We Don't Like
None specified
Buying Guide Image

The Best Selenium Supplements to Buy Right Now

Introduction

Selenium is a trace mineral that is essential for the proper functioning of the human body. It is known to play a crucial role in metabolism, reproduction, and the immune system. While most people get enough selenium through their diet, some individuals may benefit from taking selenium supplements. In this article, we will discuss how to choose the right selenium supplement for your needs.

The Different Forms of Selenium Supplements

Selenium supplements are available in several forms, including selenium yeast, selenomethionine, and sodium selenite. Selenium yeast is derived from the metabolism of Saccharomyces cerevisiae, a type of yeast. It is considered a more bioavailable form of selenium, which means that it is more easily absorbed by the body. Selenomethionine is a synthetic form of selenium that is similar to the selenium found in foods such as Brazil nuts and fish. Sodium selenite is a salt form of selenium that is often used in multivitamin supplements.

Choosing the Right Dosage

The recommended daily allowance (RDA) of selenium for adults is 55 micrograms per day. However, some individuals may require a higher dose of selenium depending on their age, sex, and other factors. It is important to consult with a healthcare provider before starting a selenium supplement to determine the appropriate dosage for your needs. Overdosing on selenium can cause serious side effects, such as garlic breath, hair loss, and digestive upset.

Selecting a Reputable Brand

When choosing a selenium supplement, it is important to select a reputable brand. Look for brands that have been tested and certified by third-party organizations such as the United States Pharmacopeia (USP) or NSF International. These organizations ensure that the supplements meet certain quality standards and do not contain harmful ingredients. It is also a good idea to read customer reviews and compare prices to find the best value for your money.

Conclusion

Selenium is an essential trace mineral that plays a crucial role in various bodily functions. While most people get enough selenium through their diet, some individuals may benefit from taking selenium supplements. When choosing a selenium supplement, it is important to consider the form, dosage, and brand. Always consult with a healthcare provider before starting a selenium supplement to ensure that it is safe and effective for your needs.

Frequently Asked Questions (FAQs)

1. Who should take selenium?

Selenium is beneficial for individuals with conditions like rheumatoid arthritis (RA) and certain types of cancer, as they often have low levels of selenium. It also plays a role in thyroid function and supports a healthy immune system.

2. What are the signs you need selenium?

Signs that indicate a potential selenium deficiency include fatigue, mental fog, weakened immune system, hair loss, muscle weakness, and infertility.

3. Are there any negative side effects to taking selenium?

Excessive intake of selenium can lead to toxicity symptoms such as nausea, vomiting, nail discoloration and brittleness, hair loss, fatigue, irritability, and foul breath odor.

4. What does selenium do for thyroid?

Selenium contributes to the antioxidant defense in the thyroid by removing oxygen free radicals generated during the production of thyroid hormones. It plays a crucial role in maintaining thyroid health.

5. What is selenium supplement good for?

Selenium supplements offer several benefits, including acting as a powerful antioxidant, reducing the risk of certain cancers, protecting against heart disease, helping prevent mental decline, supporting thyroid health, boosting the immune system, and potentially reducing asthma symptoms.

6. Why would a person take selenium?

Selenium is a vital nutrient for overall health. It supports reproduction, thyroid gland function, DNA production, and protects the body from free radicals and infection.

7. What are 6 signs of selenium deficiency?

Six signs of selenium deficiency include infertility in men and women, muscle weakness, fatigue, mental fog, hair loss, and a weakened immune system.

8. What happens when you start taking selenium?

When you start taking selenium supplements, it is believed to offer various benefits such as boosting immune function, improving hair and nail health, and supporting a healthy thyroid. Sometimes, selenium supplements are combined with other antioxidant vitamins like vitamin E or C.

9. Is it OK to take selenium everyday?

The recommended daily intake of selenium for adults and pregnant/lactating women is 400 micrograms. It is generally safe to take selenium daily up to this recommended amount, as it is unlikely to cause harmful effects on health.

10. Is selenium OK for hypothyroidism?

Supplementing with selenium has been shown to reduce thyroid peroxidase antibodies (TPO) and the severity of symptoms related to hypothyroidism in several studies. It can be beneficial for individuals with hypothyroidism.

Editor's Notes

During our selenium supplement research, we found 24 selenium supplement products and shortlisted 10 quality products. We collected and analyzed 181,176 customer reviews through our big data system to write the selenium supplements list. We found that most customers choose selenium supplements with an average price of $16.42.

The selenium supplements are available for purchase. We have researched hundreds of brands and picked the top brands of selenium supplements, including Bronson, THORNE, Nature's Bounty, NOW Foods, Life Extension. The seller of top 1 product has received honest feedback from 15,374 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.

Selenium Supplements Comparison Table

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Brand Bronson THORNE Nature's Bounty NOW Foods Life Extension Pure Encapsulations Horbäach Nutricost NOW Foods Carlyle
Item Form Capsule capsules Tablets Tablet Capsule Capsule - Capsule Capsule Tablet
Unit Count 250.00 Count 60.00 Count 100 Count 250 Count 100 Count 60.00 Count - 240.0 Count 180 Count 270.0 Count
Flavor Unflavored Unflavored Grape Unflavored Unflavored Unflavored - Unflavored Unflavored Unflavored
Primary Supplement Type Selenium Selenium Zinc Selenium Selenium (as Se-Methyl L-Selenocysteine, L-selenomethionine (yeast free), sodium selenite), Vitamin E (as D-alpha tocopheryl succinate) Selenium - Selenium Selenium -
FTB Score
ftb score rating icon 9.8
ftb score rating icon 9.7
ftb score rating icon 9.5
ftb score rating icon 9.5
ftb score rating icon 9.4
ftb score rating icon 9.2
ftb score rating icon 9.2
ftb score rating icon 9.2
ftb score rating icon 9.2
ftb score rating icon 9.0
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