Selenium Supplements & Information


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Selenium is an essential trace element. It is an integral part of enzymes, which are critical for control of the numerous chemical reactions involved in brain and body functions.  Selenium has a variety of functions. The main one is its role as an antioxidant in the enzyme selenium-glutathione-peroxidase. This enzyme neutralizes hydrogen peroxide, which is produced by some cell processes and would otherwise damage cell membranes.


Selenium also seems to stimulate antibody formation in response to vaccines. It also may provide protection from the toxic effects of heavy metals and other substances.


Selenium may assist in the synthesis of protein, in growth and development, and in fertility, especially in men. It has been shown to improve the production of sperm and sperm motility.   Read more below...


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You can get Selenium Supplements online at stores below:


Vitamin World

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The Vitamin Shoppe

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Drugstore - home of the GNC Store

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Puritan's Pride

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Food Sources 

Fish, shellfish, red meat, grains, broccolis, onions, tomatoes, tunas, eggs, chicken, liver, and garlic are all good sources of selenium. The amount of selenium in vegetables is dependent on the selenium content of the soil. Brewer's yeast and wheat germ, both considered "health foods," are also good sources of selenium.

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Side Effects

Selenium deficiency may occur in patients fed intravenously for long periods of time.


Keshan disease is caused by a deficiency of selenium. This leads to an abnormality of the heart muscle, and it claimed the lives of many children in China until the relationship to selenium was discovered and selenium supplements were provided.

Cattle grazing in selenium-rich soil have shown toxicity caused by increased levels of selenium. The cattle developed muscle, visual, and heart problems.


The amount of selenium that would cause toxicity in humans is not known. Excess selenium intake can cause problems with the strength of teeth and the tooth enamel. Other problems may include loss of teeth, hair, and nails. Skin inflammation, nausea, and fatigue can also occur.   vgo to top



Selenium is often available in multivitamin and mineral supplements. The suggested intake by nutrition experts is 50 to 200 micrograms for adults, which the average diet in the U.S. usually provides.  Specific recommendations for each nutrient depend on age, gender, and other factors (such as pregnancy).


Evidence exists that selenium may play a role in cancer prevention, but better studies are needed. There have been mixed results regarding selenium's impact on cardiovascular disease.   vgo to top


Information on this site is provided for informational purposes and is not meant to substitute for the advice provided by your own physician or other medical profession. You should not use the information contained herein for diagnosing or treating a problem or disease, or prescribing any medication. If you have or suspect that you have a medical problem, promptly contact your health care provider.  Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease.  Please review the Terms of Use before using this site.  Your use of the site indicates your agreement to be bound by the Terms of Use.



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