
Selenium supplement comparison
Price | Product details | |
Thorne Research Selenomethionine | $10; 17 cents/dose | selenomethionine, allergen-free |
Pure Encapsulations Selenium (Selenometh ... | $12.50; 21 cents/dose | selenomethionine, allergen-free, non-GMO |
Life Extension Super Selenium | $10.50; 10 cents/dose | selenium from yeast-free sources, vitami ... |
NOW Selenium | $18.99; 11 cents/dose | selenium from yeast-free sources, non-GM ... |
Full Answer
Which is better, UFT or selenium?
Which is better selenium or UFT? UFT scripts are more stable than Selenium. UFT is feature rich compared to Selenium. UFT can reduce the number of resources needed because it has many ready-made functions and helps with scripting. In Selenium you may need a little more resources and write more lines of code.
What are the best sources of selenium?
Top 15 High-Selenium Foods
- Brazil nuts. Brazil nuts ’ selenium content is amazing, isn’t it? ...
- Wild-caught salmon
- Tuna. Yellowfish tuna is especially rich in this trace element. ...
- Turkey. Don’t forget about turkey until next Thanksgiving. ...
- Cottage cheese. ...
- Chicken. ...
- Mushrooms, cooked. ...
- Halibut, cooked with skin. ...
- Eggs. ...
- Navy beans. ...
What is the best food for selenium?
Vegetables High in Selenium
- Broccoli selenium: 2.3 mcg per 1 cup. 3) Mushrooms: Mushrooms are on the top of this list as they are the best vegetarian sources for selenium.
- Soybeans selenium: 7.3 mcg per 1 cup. 6) Carrots: The vitamin A rich crunchy food is also a foundation of selenium. ...
- Asparagus selenium: 2.3 mcg per 1 cup. ...
What are some alternatives to selenium?
- CI integration
- Configuration and Environment Switching
- Grouping / Tagging
- HTML / reporting
- Parallel-execution
- Assertions

Which form of selenium is best?
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 ).
Is 200 mcg of selenium too much?
Selenium is suggested in doses of no more than 200 mcg per day. The treatment range for selenium is narrow. You shouldn't take too much. The recommended dose is 100 mcg to 200 mcg per day.
Who should not take selenium?
Avoid long-term use of selenium supplements if you have ever had skin cancer. Surgery: Selenium might increase the risk of bleeding during and after surgery. Stop taking selenium at least 2 weeks before a scheduled surgery.
What does selenium do for the body?
Selenium is an essential component of various enzymes and proteins, called selenoproteins, that help to make DNA and protect against cell damage and infections; these proteins are also involved in reproduction and the metabolism of thyroid hormones.
Can I take selenium and magnesium together?
Selenium combined with magnesium is a promising therapeutic strategy with lipid-lowering and antioxidative effects that protects the liver against hyperlipidemia.
When should I take selenium morning or night?
Many vitamins and mineral supplements can cause nausea, heartburn and other gastric disturbances, especially when taken on an empty stomach. There are no rules about the best time of day to take them. My advice is to do so when they most agree with you.
What can you not mix with selenium?
Drugs that affect selenium levels in the body -- These drugs may lower levels of selenium: Cisplatin, a chemotherapy drug....Anticoagulants and antiplatelet drugs (blood thinners) -- When combined with these drugs, selenium may increase the risk of bleeding:Clopidogrel (Plavix)Warfarin (Coumadin)Heparin.Aspirin.
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.
Can I take selenium and zinc together?
No interactions were found between selenium and Zinc.
Can taking selenium be harmful?
Extremely high intakes of selenium can cause severe problems, including difficulty breathing, tremors, kidney failure, heart attacks, and heart failure. The daily upper limits for selenium include intakes from all sources—food, beverages, and supplements—and are listed below.
What food is high in selenium?
Selenium and Healthful DietsMany whole grains and dairy products, including milk and yogurt, are good sources of selenium. ... Pork, beef, turkey, chicken, fish, shellfish, and eggs contain high amounts of selenium.
Is it a good idea to take selenium?
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.
How much selenium per day is too much?
400 micrograms a dayMost people can get their RDA of selenium from food. In some studies to determine if selenium could aid in prostate cancer prevention, men took 100 micrograms daily. The safe upper limit for selenium is 400 micrograms a day in adults. Anything above that is considered an overdose.
How much selenium should a person take a day?
To prevent deficiency, the amount is based on normal daily recommended intakes: Adult and teenage males—40 to 70 micrograms (mcg) per day. Adult and teenage females—45 to 55 mcg per day. Pregnant females—65 mcg per day.
What level of selenium is toxic?
The Dietary Supplements Regulations 1985 require selenium supplements to be manufactured and labelled so that the recommended daily dose is no more than 150µg. A maximum safe daily dietary intake has been estimated at 400µg. At an intake of 750-850µg functional signs of toxicity can be expected.
How do you know if you have too much selenium?
Symptoms of selenium toxicity include nausea; vomiting; nail discoloration, brittleness, and loss; hair loss; fatigue; irritability; and foul breath odor (often described as “garlic breath”). Selenium is found in the environment in soil.
What are the benefits of taking a selenium supplement?
Taking supplemental selenium may be helpful for certain people, including those who don't get enough selenium in their diet and those with certain...
Who should take a selenium supplement?
People who are at risk of a selenium deficiency — such as those following vegan diets and those with certain medical conditions, including phenylke...
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 for...
Are selenium supplements safe?
Yes, selenium supplements are generally safe. However, it's possible to take too much, which can lead to side effects. Also, most people do not nee...
Who shouldn't take selenium?
Most people don't need to supplement with selenium because the nutrient is present in many foods, including nuts, fish, meat, and eggs. Generally h...
How can a selenium supplement help me?
If you are deficient in selenium, taking a supplement can help to improve your thyroid function, and some evidence suggests that selenium supplemen...
How often should I take a selenium supplement?
Most manufacturers recommend you take their selenium supplements once per day, so this is what you should do unless instructed otherwise by your do...
Are selenium supplements safe?
If you take them as directed, they should be safe, but if you're consuming large amounts of selenium through your diet and then you add a selenium...
What is the purest selenium supplement?
Thorne Research Selenomethionine is the purest selenium supplement on the market when it comes to ingredients. Aside from selenium itself, the only ingredient is the cellulose that’s used to make up the capsule. For a 200 mcg selenium supplement that makes no compromises on clean supplement design, choose Thorne Research.
What is the best selenium for women?
Best selenium for women: Thorne Research Selenomethionine. Women looking for a reliable source of supplemental selenium should opt for Thorne Research Selenomethionine —it’s devoid of extraneous ingredients and has a highly effective dosage as well. Best selenium for aging: Life Extension Super Selenium Complex.
How much Selenium is in a capsule?
Pure Encapsulations Selenium delivers the standard 200 mcg dose in a cellulose capsule, and aside from a touch of vitamin C for better shelf life, it’s devoid of additional additives, making it a smart choice.
How much selenium should a pregnant woman have?
Starting from around age 14-18, teenagers and adults need about 55 mcg of selenium until death. Pregnant teenagers or adult women need 60 mcg of selenium while breastfeeding teenage or adult women need 70 mcg of selenium. This is because of increased nutritional demands from either the fetus or breastfeeding baby (13).
What is the life extension vitamin E?
Life Extension Super Selenium Complex pairs two forms of selenium with vitamin E for added antioxidant power. This supplement is designed specifically to take advantage of selenium’s benefit for long-term well-being and youthfulness, and the inclusion of two different types of selenium might marginally improve the bioavailability of this supplement.
How is selenium produced?
Its selenium is produced biologically, by specially-engineered yeast. The presence of high levels of brewer’s yeast might cause some problems if you are trying to alter your body’s probiotic makeup, for example, you might not want to be adding yeast in the form of a supplement, even as a byproduct.
What is the purpose of Selenium in the human body?
Fact checked by Peter Tzemis, BHSc - Written by John Davis. Selenium is a trace mineral that your body needs for protecting DNA and ensuring healthy brain function.
How much selenium is too much?
It is possible to have too much selenium, but the upper limit appears to be in the area of 1,500 micrograms, more than 25 times the RDI. If you want to keep your bases covered and ensure you’re getting your daily 55 micrograms, these are the best supplements on the market.
How to compare the price of a supplement?
The easy way to compare the price of two products is to find what an equivalent serving is of each product and then divide that by the number of servings offered by each. In addition to price, the dose is also the biggest tell if a product fits what you are looking for in your supplementation. If a product offers a very high dose of selenium and that’s what you want, then great. The dose of selenium will vary from product to product, but other factors at play can affect the dose beyond what the producer decided the serving should be.
Is selenium gluten free?
The capsules are three-quarters of an inch long, so they are unlikely to be difficult for most consumers to swallow. These capsules are gluten and soy - free and the only additional ingredients beyond the selenium are the makeup of the capsule itself — rice flour, hypromellose, and stearic acid.
Is Selenium capsule vegetarian friendly?
The product is totally free from GMOs, gluten, and soy. Additionally, the capsules are vegetarian-friendly, opening up the range of diets it is suitable for. What will set this product apart from comparable capsule options is that the form of selenium is in the form of amino acid chelate.
Is selenium a yeast free supplement?
Now Foods achieved the combination of a yeast-free, vegan – and vegetarian-friendly selenium supplement that packs quite the dose for its cost. A single-capsule serving has 200 micrograms of selenium (364 percent of the recommended daily intake) and is free of artificial sweeteners, aspartame, and unlisted allergens.
Is Selenium a novel compound?
See our disclosure page for details. Selenium is an essential mineral — it’s not a novel compound with very little research behind it. It plays a critical role in the body’s antioxidant capabilities. In other words, it can be a valuable tool for those looking to minimize inflammation.
Is selenium good for the immune system?
It’s an Antioxidant. This is the most widely accepted benefit of selenium. ( 1 ) ( 2 ) ( 3) Antioxidants neutralize free radicals, which contribute to a huge variety of ailments and many areas of the aging process. A 2015 study published in Advances in Nutrition found selenium to strengthen the immune system.
What is the best source of selenium?
Good natural food sources of selenium include: Nuts, like Brazil nuts and walnuts. Many fresh and saltwater fish, like tuna, cod, red snapper, and herring. Beef and poultry.
What foods contain selenium?
Good natural food sources of selenium include: 1 Nuts, like Brazil nuts and walnuts 2 Many fresh and saltwater fish, like tuna, cod, red snapper, and herring 3 Beef and poultry 4 Grains
What are the health conditions that are associated with low selenium levels?
But some health conditions -- such as HIV, Crohn's disease, and others -- are associated with low selenium levels. People who are fed intravenously are also at risk for low selenium. Doctors sometimes suggest that people with these conditions use selenium supplements.
Where is selenium found in 2021?
Medically Reviewed by Melinda Ratini, DO, MS on March 26, 2021. Selenium is a mineral found in the soil. Selenium naturally appears in water and some foods. While people only need a very small amount, selenium plays a key role in their metabolism.
Can selenium cause nausea?
Taken at normal doses, selenium does not usually have side effects. An overdose of selenium may cause bad breath, fever, and nausea, as well as liver, kidney and heart problems and other symptoms. At high enough levels, selenium could cause death. Interactions.
Does selenium interact with other drugs?
Selenium may also interact with other medicines and supplements, such as some antacids, chemotherapy drugs, corticosteroids, niacin, cholesterol-lowering statin drugs, and birth control pills. Skin cancer.
Does selenium help with cancer?
Evidence that selenium supplements may reduce the odds of prostate cancer has been mixed, but most studies suggest there is no real benefit. Selenium does not seem to affect the risk of colorectal or lung cancer. But beware: some studies suggest that selenium may increase the risk of non- melanoma skin cancer.
Benefits of Selenium Supplements
On the market, you can find many types of selenium supplements and the best ones are those that contain this mineral in organic form, which allows greater bioavailability.
Selenium Posology
The selenium supplements are ideal in the case of an unbalanced diet that does not allow to take this mineral enough. Generally, however, the supplements should be used only if recommended directly by the doctor.
Dose to Be Taken with Selenium
Most selenium supplements are taken through capsules and in general it is sufficient to take only one to obtain the daily dose necessary for the human body, in any case before taking it you must always check the label to make sure how many capsules you have to take each day to reach the necessary daily dose and this can be known precisely by checking the label and description of the supplement before purchasing it.
Size of Selenium Capsules
The larger the capsule size, the greater the difficulty in swallowing it. If swallowing capsules is a problem for you, you should understand how big they are before making a purchase. Some manufacturers draw the capsule’s natural size on the label, so before purchase, you will know exactly what size it has
Synthetic or Natural Food Supplement
Natural food supplements contain traces of real fruit and vegetables, while synthetic supplements are created in the laboratory. Some people say that natural food supplements are superior and therefore give better results, while others still say that synthetic supplements are able to work as well as natural ones.
Odor
Selenium is generally a supplement that has a characteristic strong odor, but some manage to mask it better than others. The odor is perhaps not one of the most important characteristics, however, some people who are very sensitive to odors may have difficulty taking the supplement
Some Tips
Before taking selenium capsules to supplement your diet, read the instructions carefully, and do as written. If in doubt, contact your doctor before taking it to find out more about the dosages you need
What foods contain selenium?
Includes a variety of protein foods such as lean meats; poultry; eggs; seafood; beans, peas, and lentils; nuts and seeds; and soy products. Pork, beef, turkey, chicken, fish, shellfish, and eggs contain high amounts of selenium . Some beans and nuts, especially Brazil nuts, contain selenium.
What are the most commonly used measures of selenium?
The most commonly used measures of selenium status are plasma and serum selenium concentrations [ 1 ]. Concentrations in blood and urine reflect recent selenium intake. Analyses of hair or nail selenium content can be used to monitor longer-term intakes over months or years.
Why is selenium low in HIV?
Selenium levels are often low in people living with HIV, possibly because of inadequate intakes (especially in developing countries), excessive losses due to diarrhea, and malabsorption [ 2, 25 ]. Observational studies have found an association between lower selenium concentrations in people with HIV and an increased risk of cardiomyopathy, death, and, in pregnant women, HIV transmission to offspring and early death of offspring [ 26-30 ]. Some randomized clinical trials of selenium supplementation in adults with HIV have found that selenium supplementation can reduce the risk of hospitalization and prevent increases of HIV-1 viral load; preventing HIV-1 viral load progression can lead to increases in numbers of CD4 cells, a type of white blood cell that fights infection [ 31, 32 ]. However, one trial showed that selenium supplementation in pregnant women can prevent early death in infants but has no effects on maternal viral load or CD4 counts [ 33, 34 ].
What are the factors that affect the amount of selenium in plant based food?
The amount of selenium in a given type of plant-based food depends on the amount of selenium in the soil and several other factors, such as soil pH, amount of organic matter in the soil, and whether the selenium is in a form that is amenable to plant uptake [ 2, 6, 8, 9 ].
What is the role of selenium in the body?
Selenium, which is nutritionally essential for humans, is a constituent of more than two dozen selenoproteins that play critical roles in reproduction, thyroid hormone metabolism, DNA synthesis, and protection from oxidative damage and infection [ 1 ].
Where is the lowest selenium level?
The lowest selenium intakes in the world are in certain parts of China , where large proportions of the population have a primarily vegetarian diet and soil selenium levels are very low [ 5 ]. Average selenium intakes are also low in some European countries, especially among populations consuming vegan diets [ 5, 9, 23 ]. Although intakes in New Zealand were low in the past, they rose after the country increased its importation of high-selenium wheat [ 9 ].
Which muscle is the main source of selenium?
Skeletal muscle is the major site of selenium storage, accounting for approximately 28% to 46% of the total selenium pool [ 3 ]. Both selenocysteine and selenite are reduced to generate hydrogen selenide, which in turn is converted to selenophosphate for selenoprotein biosynthesis [ 4 ].

Rankings
Category Winners
- Best selenium overall: Thorne Research Selenomethionine Thorne Research makes a selenium supplement that’s super-pure and comes in an amino acid-chelated form that gives it superior bioavailability, making it our top pick for an all-purpose selenium supplement. Best selenium for thyroid health: Dr. Mercola Zinc + Selenium Selenium is essential for ...
Who Should Buy Selenium?
- Selenium supplements are especially beneficial for individuals who have tested low in selenium, or is from a country whose soil is depleted in selenium. It also great for men who are looking to optimize their testosterone and sperm production. Selenium may also benefit older people as it helps reduce chronic inflammation, which can play a role in preventing neurodegenerative disea…
How We Ranked
- There are four main types of selenium supplements to consider: Selenium sulfide, Sodium selenite, selenium-enriched yeast, and selenomethionine. Of the four options, the last two are preferred because they are organically derived. Inorganic forms of selenium are easily removed by the kidneys and do not provide adequate benefits. Organic forms that are protein-bound are bett…
Benefits
- Selenium helps protect your body’s cells and DNA from oxidative damage. Selenium plays a very specific antioxidant role inside your body, according to a review article published in 2000 in The Lancet by Margaret Rayman at the University of Surrey (1). The review cites dozens of studies that describe the molecular mechanisms behind selenium’s ability to protect cells in your body from …
Side Effects
- According to the Office of Dietary Supplements at the United States National Institutes of Health, excessive selenium intake can cause brittle nails, hair loss, a garlic-like smell in your breath, fatigue, and rashes (8). High intakes of selenium have been studied in great detail because of the unusually high level of selenium in Brazil nuts (two Brazil nuts can contain as much selenium as …
Recommended Dosage
- Given the upper limits discussed above, it should be no surprise that the vast majority of over the counter selenium supplements have 200 mcg of selenium each. Taking one of these capsules per day should be enough to boost your selenium without putting you over the daily limit, unless you consume a lot of foods rich in selenium. This is also in line with the dosage level used in many c…
FAQ
- What are the best selenium-rich foods?Brazil nuts are by far the best source of selenium, containing around 544 mcg per ounce. Other selenium-rich foods include fish, ham, beef, and turkey. Does selenium reduce the risk of certain cancer?Selenium may reduce the risk of certain cancers by helping to protect against oxidative damage. According to a meta-analysis, which loo…
Related Articles
Recap
- Selenium is an important trace mineral that’s associated with increased resistance to oxidative damage, improvements in brain and thyroid health (in moderate amounts), and protection against cognitive decline in the elderly. Selenium levels drop over time as you get older, so increasing your selenium intake appears to be a priority particularly for people who are age 60 and older. There …