What is the Best Selenium Supplement Brand To Buy in 2017?

Occurring naturally in foods such as Brazil nuts, sunflower seeds, eggs, liver, tuna, cod, poultry and red meat, selenium is a non-metallic trace element which helps the body to work more efficiently.

Scientific research has shown selenium to be beneficial in a variety of different ways. We’ve decided to take a closer look at selenium and its health benefits. At the end, I’ll share my personal pick for the best selenium supplement.

What is Selenium?

Selenium is one of the minerals our body needs in relatively small amounts to maintain a healthy system.

The body cannot produce its own selenium, so it’s vital for general health that we take in an adequate, regular daily supply. Once ingested, it combines with amino acids (the building blocks of protein) and has a wide variety of effects on the body.

Selenium can be helpful in managing many different health conditions.

Who Needs Selenium?

Due to its antioxidant, antiviral and immune system enhancing properties, potentially everyone can benefit from a regular daily intake of selenium.

Historically, research has shown that selenium is particularly important for people with thyroid conditions and those who have problems with fertility.

However, studies now suggest that regular consumption of selenium has a number of other benefits to health. Here are a few of the most important:

Improves Thyroid Function

According to the American Thyroid Association, approximately 20 million people in the US suffer from thyroid disease.

Selenium has been proven to increase production of active thyroid hormone and reduces the risk of autoimmune thyroid disease (source).


Antioxidants are chemicals which protect the body from cell damage by absorbing free-radical compounds.

Selenium has been shown to be an effect antioxidant, and research suggests that this is important for a variety of different factors, including risk of heart disease and cancer (source).


Studies have shown that in people who consume inadequate daily levels of selenium, boosting intake had a beneficial effect on lung cancer (source). At present, this cannot be generalized to other forms of cancer.


Some research suggests that selenium has anti-inflammatory properties. This is supported by its action as an antioxidant, as these two mechanisms work together in the body (source).


Health problems caused by viruses are widespread throughout the general population.

Their effect on the human body ranges from being annoying, like the common cold, to life-changing, such as HIV.

Selenium has been shown to have a positive effect on viral infections as a supplementary treatment, but not as a first line therapy (source).

Aids Fertility

Selenium has been a recognized treatment for fertility for many years, and the importance of adequate levels of selenium in maintaining healthy sperm cells has been proven (source)

Protects the Brain and Nervous System

Research suggests that the amino acid chains containing selenium are very important for optimal brain and nervous system function, and are responsible for maintaining an adequate supply of selenium within the brain (source).

Why Take Selenium As A Supplement?

Although selenium occurs naturally in many of the foods we eat as a part of a normal diet, the selenium content of any given food depends on the selenium content of the soil in which it has been grown. In the case of animal products, the selenium content of the food it has been fed.

In addition, it is very easy to destroy selenium during the cooking process.

Taking a supplement makes sure your body gets a regular dose of selenium in a form that your body can use.

Precautions For Use

People who live in an area where there is an abundance of selenium present naturally is the soil, such as the Dakotas, should not take selenium supplements.

During pregnancy or breast feeding, most manufacturers recommend seeking medical advice before taking selenium.

While studies show that selenium positively affects many types of cancer, there is some evidence to suggest that it can increase the risk of skin cancer. The current recommendation is to avoid higher levels of selenium if you are at risk of skin cancer.

How Much Selenium Do We Need?

Some medical sources state that the maximum daily dose of selenium should not exceed 200 mcg per day.

Other sources suggest that consuming more than the recommended dose of 55mcg per day on an ongoing basis can have toxic effects on the body. Regular overdosing can have serious and permanent consequences for health (source).

The general rule of thumb is to seek medical advice before taking any supplement, especially if you have a health condition or take a prescription medicine.

What is the Best Selenium Supplement Brand?

With a variety of different selenium supplements available on the market, it can be tricky to work out which product is right for you. In the next section, I’ve taken a close look at five of the top contenders for the title of best selenium supplement and broken down their pros and cons to help you make an informed decision.



Our rating

Amazing Formulas have a clear commitment to providing high quality products at affordable prices, and their selenium supplement is no exception


  • 200 mcg per serving
  • Tablet form
  • 240 tablets per container
  • Made in USA
  • GMP approved
  • Tested for quality and purity
  • 100% natural
  • Suitable for vegetarian diets
  • Soy and dairy free
  • Easy to swallow, small tablet


  • Contains gluten
  • Unpleasant smell



Our rating

A trusted brand, Bronson is a well-established company. They pledge to produce high quality products that are tested for purity.

Their selenium supplement is no exception, and was also the lowest priced supplement of the selection we reviewed. The only downsides are that it is not suitable for vegetarian diets, and a small number of users reported unpleasant side effects.


  • 200 mcg per serving
  • Capsule form
  • 250 capsules per container
  • Made in the US
  • GMP and FDA approved
  • Easy to swallow capsules
  • Money back guarantee


  • Contains gelatin
  • Small number of users report stomach upset after taking



Our rating

LFI Labs has created a selenium option in their Elements range of natural supplements.

Although it comes in at a significantly higher price than some other products we reviewed, this supplement is of high quality, non-GMO, and the company offers a reassuring money back guarantee.


  • 200 mcg per serving
  • 100 capsules per container
  • Made in USA
  • FDA and GMP approved
  • NSF certified
  • Vegetarian
  • 100% money back guarantee
  • No negative points reported by users


  • Higher price



Our rating

A well-established and trusted company, Thorne Research states that they use only ingredients from the purest sources in the world. This may be the reason why their selenium supplement is the most expensive product we reviewed.


  • 200 mcg per serving
  • 60 capsules per container
  • Made in USA
  • Suitable for vegetarians
  • 100% natural
  • Non-GMO
  • Ingredients and product tested for quality
  • Gluten, soy, dairy, sugar and yeast free
  • Many users report a strong positive effect


  • A small number of users report no effect
  • High price



Our rating

With a reputation established over 50 years, NOW Foods Selenium is a good quality product at a reasonable price. However, a few users reported no effect or some negative side effects.


  • Capsule form
  • 200 mcg per serving
  • 180 capsules per container
  • GMP approved
  • Suitable for vegetarian and vegan diets
  • Free from preservatives
  • Gluten, soy, dairy and yeast free


  • Some users report no effect or stomach upset after taking

Our Choice

In our opinion, the Amazing Formulas Selenium is a product which is hard to beat. It’s high quality, manufactured in the USA to GMP standards, tested for purity, 100% natural and suitable for most diets except gluten free.

The only negative point is an unpleasant smell, but most users report this is tolerable.

As this product offers fantastic value for money but does not compromise on quality, we declared it our overall winner.

Helen Sanders

Chief editor here at Health Ambition, I'm a proud mother of two passionate about nutrition and ways to live healthier with more energy!

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