Selenium is an important antioxidant that helps protect our cells from free radicals which causes harm in a cellular level, and many don't get enough of it in our diets.

Free radicals are unstable molecules that can increase the risk of diseases such as cancer and heart disease.

Selenium supplements are a great way to make sure you're getting enough of this crucial antioxidant. Not only do they help protect our cells, but they also support overall health and wellness.

We've curated a list of top-quality products below that we're confident you'll love. Our editors have independently selected each one, and although some have been sent to us as samples, all opinions in this article are our own. We want to be transparent with you and let you know that FlairFindings may earn a commission or other compensation from the links on this page if you decide to make a purchase. This is how we sustain our business & content flow. Additionally, we have edited reviews for length and clarity. We hope you enjoy discovering your new favorite item!

How We Select The Best

Are you suffering form selenium deficiency or looking to further boost your health and wellbeing?

Selenium is a powerful mineral that can have a profound impact on our overall wellness, fertility, and longevity. It’s an antioxidant trace mineral linked with improved wellbeing and it can even help slow the aging process!

Our selections of the best selenium supplement will help ensure you get the most out of this powerful antioxidant – so you can look and feel your very best!

Keep scrolling down and check out our range of the best selenium supplements today!

Best Absorption

Bronson Selenium

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What's the Big Deal?

Bronson Selenium helps you naturally take charge of your health. This advanced formula provides high bioavailability selenium sources such as L-selenomethionine and sodium selenite for maximum absorption. These two forms of selenium supplementation work together to deliver an array of benefits throughout the body, helping to support heart health and prostate health, boost the immune system, facilitate metabolism in both men and women, and encourage a healthy thyroid gland.

Plus, you can trust that every batch is laboratory tested non-GMO, gluten free, yeast free and soy free. With Bronson Selenium in your corner, you'll know that you are taking the best steps possible to achieve whole body wellness!

What You Should Know

Bronson Selenium's 200 MCG dose provides an easy-to-absorb creation of essential sulfur amino acid chelated form mineral, that's been maximized by Albion Minerals – the innovators and researchers in mineral science with over 150+ patents backing them.

Albion Minerals engineering processes guarantee stabilized absorption and optimal bioavailability so that each person gets complete selenium nutrition quickly and efficiently.

Best Antioxidant

Solgar Selenium

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What's the Big Deal?

Solgar's yeast free selenium supplement tablets provide your body with an essential trace mineral. This great formula contains L-­selenomethionine, which is made up of antioxidant enzyme glutathione peroxidase. This powerful combination helps to protect cells from cell-­damaging free-radicals, as well as recycle Vitamin E for additional antioxidant support.

Through regular intake of Solgar Selenium tablets you can help ensure your body has the necessary levels of this nutrient needed to support a healthy and active lifestyle. Its perfect for those who need an extra antioxidant boost in addition to a balanced diet!

What You Should Know

Solgar Selenium is a high-quality supplement that's been specially formulated with the highest quality ingredients to support your wellbeing and nutritional goals. It's non-GMO, vegan, kosher, gluten-free, wheat-free, dairy-free, soy-free, yeast-free, sugar-free, sodium-free formula, and free of any artificial flavors or sweeteners as well as preservatives and colors.

Backed by Solgar's decades of commitment to creating superior supplements in small batches through tireless research of only the finest raw materials, their Selenium solution is sure to give you the added health benefits you're after.

Best Thyroid Support

Global Healing Selenium

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What's the Big Deal?

Global Healing's Selenium is a potent antioxidant that can help protect your cells from free-radical damage and support healthy cell function granting improved immune health. Not only is it excellent for your heart health, but it also helps to maintain normal circulation and metabolism – promoting overall wellness.

This selenium supplement provides maximum thyroid support which can prevent any oxidative stress, making sure your heart stays healthy. The all-natural ingredients come together for a powerful source of nutrition and protection fit for all vegan or vegetarian diets. Get the help you need to stay healthy with Global Healing's Selenium today!

What You Should Know

Global Healing's organic selenium is a vital nutrient that plays a key role in supporting a healthy immune system and balancing hormones. Extracted from organic mustard seeds, this whole-food form of selenium offers faster and easier absorption for maximum impact.

What's more, it's free from harmful substances like gluten, soy, dairy, and GMOs. Protect your body against damaging free radicals and enjoy the benefits of this essential antioxidant today.

Best Immune Support

NOW Supplements Selenium

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What's the Big Deal?

NOW Supplements Selenium is an essential supplement that you don't want to miss. Selenium, a trace mineral that is found in foods like Brazil nuts, seafood, organ meats, and wheat germ, plays important roles in our health. It's necessary for thyroid and reproductive health as well as proper immune system functioning and antioxidant activity.

With 100 mcg of selenium per tablet, NOW Supplements is a quick and easy way to ensure your body gets what it needs — take one tablet 1–2 times daily with food. Additionally, they're certified vegan, kosher and soy-free as well as non-GMO for the highest-integrity nutrition possible.

What You Should Know

For over five decades, NOW Supplements has been a leader in providing high-quality health supplements to their customers all around the world. Thanks to their rigorous Good Manufacturing Practices (GMP) and unwavering commitment to using only the best ingredients, you can trust that their products are safe, effective, and reliable.

Plus, with their dedication to packaging all their goods right here in the USA, you can rest easy knowing that your health supplement was made with care and quality in mind.

Best Liquid Option

Triquetra Health Selenium

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What's the Big Deal?

Triquetra Health is vital nutrients selenium supplement that contains 200 mcg in each serving. The form of Selenium contained, Selenomethionine, is one of the most natural forms of Selenium found in food. It has an exceptionally high absorption rate, making it much more effective than capsules or powders.

In addition to its effectiveness and potency, it comes in a sublingual liquid that is immediately absorbed into the bloodstream and assimilated quickly so that you can feel the benefits faster. Plus, It's vegan, soy-free, filler-free, preservative-free, and gluten-free. For those looking to enjoy all the nutritional benefits of Selenium without any extra additives or ingredients, Triquetra Health Selenium is an excellent choice.

What You Should Know

Revitalize your body with Triquetra Health high quality nutritional supplements. With 50 mcg of Selenium in every droplet, it's easy to adjust your dosage to meet your needs. Not only is the liquid form highly versatile, but it can also be taken as is or added to your favorite meal or beverage.

Triquetra Health Selenium is a powerhouse supplement that helps protect against selenium and thyroid disease by supporting thyroid function, heart health, brain function, immune system function, and prostate health. As a potent antioxidant, it also reduces oxidative stress and slows aging.

Benefits, Dosage, and Side Effects

Here's the benefits, dosage and side effects of selenium supplements.


Selenium is a mighty micronutrient that is essential for a healthy lifestyle. Not only does it protect your body from damage, but it also helps maintain a balanced metabolism. Although found in some foods, the best way to ensure you are getting enough of this powerhouse nutrient is to take a supplement.

Packed with a plethora of benefits, taking a selenium supplement can strengthen a healthy immune system, selenium also helps keep your heart healthy, and even reduce your risk of certain thyroid-related diseases. Don't underestimate the power of this tiny but vital nutrient!


This powerful essential mineral, which can be found in just a few micrograms per day, is essential for many bodily functions. However, it's important to be careful when taking selenium supplements, which are often available in much higher doses.

While short-term use may not be harmful, prolonged use could lead to toxicity. To ensure your safety and avoid any potential health complications, it's crucial to read the recommended dosage on the product label or speak with your health care professional to gain a more in depth understanding.

Side Effects

Be careful when it comes to consuming selenium, because too much of it can cause a condition called selenosis that results in hair loss, gastrointestinal discomfort, and issues with nerve function. But don't worry, following the recommended dose of selenium supplements should be harmless and should cause few side effects.

However, it's important to know that excessive selenium consumption can lead to a pretty unpleasant list of symptoms including bad breath, fever, nausea, and even liver and kidney problems. To avoid any negative reactions with other medications, it's important to check with your healthcare provider before taking selenium alongside other medications like antacids, chemotherapy drugs, corticosteroids, statins, niacin, or birth control pills. Stay on the safe side by keeping an eye on your selenium intake and consulting with a medical professional.

Selenium Supplement FAQs

How frequently should I take selenium supplements?

The frequency of supplementation varies for each person. Generally, taking supplements 1-2 times a day is sufficient, unless instructed otherwise by your doctor. Make sure to read the recommended serving for optimal daily intake guidance. Your health is important, so be mindful of how often you are taking your supplements.

What are the signs of selenium deficiency?

A lack of selenium in your body could result in a slew of symptoms that can impact your overall health. From muscle weakness and irregular heartbeats to brittle nails and hair loss, the symptoms are wide-ranging and often come with subtle signs like white spots on your fingernails.

It can even lead to hormone-related anxiety, depression, and hypothyroidism. Don't overlook the signs - watch out for a lack of selenium and take action to boost your levels before they compromise your well-being.

What are the different forms of selenium?

Selenium is available in a variety of forms that include capsules, tablets, and liquids, they offer a convenient way to get the benefits of this essential mineral. While capsules and tablets are the most common, liquid forms can also be found for those who prefer a different option.

Additionally, incorporating foods like Brazil nuts, seafood, meats, and poultry into your diet can provide natural sources of Selenium. For a comprehensive supplement, Life Extension Super Selenium Complex is a great choice that delivers everything your body needs to function optimally.

Is it worth taking selenium supplements?

Incorporating a selenium supplement into your daily routine could have a significant impact on your immune system. This is especially important during times when sickness seems to be rampant.

For those who consume a diet heavy in processed foods or live in regions with selenium-deficient soil, it may be especially beneficial. Don't underestimate the power of a strong immune system and consider adding a selenium supplement to your wellness regimen for optimal health.

Who should not take selenium?

Selenium, an essential micronutrient, but can be harmful to certain groups of people. In particular with pregnant women, children, and individuals with certain medical conditions. Pregnant women are at risk for birth complications if they consume too much selenium, while children may experience developmental issues.

Additionally, individuals with underlying health conditions such as diabetes or heart disease should steer clear of selenium as it can exacerbate these conditions. As with any dietary supplement, it is important to consult with a medical professional before incorporating selenium into your routine.

Should I take selenium in the morning or at night?

The timing of when to take selenium supplements is a personal matter, as every individual's metabolism is unique. However, experts commonly suggest taking these supplements in the morning hours. By doing so, your body will have ample time to assimilate the selenium, ensuring maximum absorption of the nutrient.

What foods contain the highest source of selenium?

If you're looking to boost your intake of selenium, a mineral that's essential for maintaining optimal health, add some flavorful ingredients to your next meal. Brazil nuts, shiitake mushrooms, halibut, beef liver, oysters, sardines, lobster, crab, turkey breast, chicken breast, and mushrooms are all excellent sources of selenium that can nourish your body and mind.

Is 400 mg of selenium too much?

When it comes to selenium intake, less is definitely more. The recommended dietary allowance for adults is just 55 mcg per day - a far cry from the 400 mcg of the tolerable upper intake level set by the US Food and Nutrition Board.

While selenium toxicity is rare, it's not impossible, and can result in uncomfortable symptoms like hair loss, brittle nails, and digestive issues. So if you're worried about your selenium levels, it's best to consult with a healthcare professional - because as with many things in life, moderation is key.

Final Word

Selenium is a highly beneficial mineral with incredible health and wellness potential. Our selections of the best selenium supplement can help ensure you get the essential nutrient to reach optimum levels. From enhanced fertility, to improved wellbeing and even slowing down the aging process – there’s no denying selenium plays a key role in our overall health.

With the right supplement intake you can look forward to obtaining excellent energy levels. Selenium might be a small mineral found in only traces – but it packs some major punch for your long-term health and wellness. Don't wait, don't miss out - get ready to receive outstanding benefits of the best selenium supplement today!