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Life Extension

200-mcg 100-Capsules

Suitable for Vegetarians


Super Selenium Complex by Life Extension contains L-selenomethionine, the most absorbable form of selenoproteins. This supplement not only contains L-selenomethionine but also contains other selenoproteins which all have varying roles in the body.

Life Extension Super Selenium Complex: As an essential co-factor of glutathione peroxidase, selenium is an important antioxidant. Selenium is incorporated into proteins to make selenoproteins, which are important antioxidant enzymes. The antioxidant properties of selenoproteins help prevent cellular damage from free radicals. Other selenoproteins help regulate thyroid function and play a role in the immune system, DNA repair, and the detoxification of heavy metals.

Levels of several health-promoting minerals, including selenium, have been shown to be high among some of the world’s longest-living people (1). Selenium is available in several different forms. For optimized selenium support, one should supplement with three complementary forms of selenium. Super Selenium Complex also contains a small amount of vitamin E because it may work synergistically with selenium (2).

Selenium is an important factor in protecting your body from oxidative damage. That’s because the body utilizes selenium to make glutathione peroxidases, a group of powerful antioxidant enzymes. Selenium may also support normal thyroid and immune function in healthy individuals.

Selenium is a vital nutrient for healthy cell division. But its ability to promote a healthy inflammatory response and quench free radicals has led scientists to explore its beneficial effects related to other conditions involving oxidative damage, particularly for heart and brain health.

Super Selenium Complex Key Benefits:

  • Contributes To the Normal Function of The Immune System
  • Supports The Maintenance of Normal Hair and Nails
  • Helps maintain normal thyroid (4,5)
  • Promotes heart health, brain health and healthy cell division (6,7,8)

Our In-House pharmacist has written an article about Super Selenium Complex:

Directions: As a food supplement take, adults take one Super Selenium Complex capsule daily with food.  Do not exceed the daily dose. 

When using nutritional supplements, please consult with your healthcare professional if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

Serving Size 1 vegetarian capsule: Amount Per Serving Vitamin E (as D-alpha tocopheryl succinate) 20.1 mg, Selenium (as Se-Methyl L-Selenocysteine, SelenoPure1 L-selenomethionine (yeast free), sodium selenite)200 mcg. Provides: Selenium (L-selenomethionine1), 50 mcg, Selenium (sodium selenite)50 mcg, Selenium (Se-Methyl L-Selenocysteine)100 mcg. Other ingredients: microcrystalline cellulose, vegetable cellulose (capsule), stearic acid, silica, dicalcium phosphate, Non-GMO 1- SelenoPure is a trademark of Nutrition 21, LLC.

Can you open this capsule and put Its contents in a smoothie?
You can, and it is still possible that you derive benefit from the nutrients. However, the product was not designed for ingestion in this manner and some may find the taste objectionable because the product is very potent.

I'm already taking Vit. E. Should I be concerned about it in this formulation?
This product contains 20.1 mg of vitamin E (as D-alpha tocopheryl succinate) per serving. Tolerable Upper Intake for vitamin E determined by the Food and Nutrition Board of the Institute of Medicine was found to be 1000 mg daily. So, it is unlikely to be an issue if this product were combined with a vitamin E product.

Is it normal for this Super Selenium Complex to have a very strong smell? 
It's possible the cysteine from the Se-Methyl L-Selenocysteine may have a sulfur-like smell.  

Does this product contain corn?
There is no corn in this product.

Is this sourced from Mustard seed? If not where?
No, the starting material for the Se-Methyl L-Selenocysteine is L-Serine. The starting material for the L-selenomethionine is L-Methionine. The starting material for sodium selenite is proprietary information.

  1. Zhonghua Yu Fang Yi Xue Za Zhi. Chinese Journal of Preventive Medicine. 2010;44(2):119-22.
  2. Cancer Research. 2003;63(20):6988-95.
  3. Science. 1973;179(4073):588-590.
  4. Best practice & research Clinical endocrinology & metabolism. 2009;23(6):815-827.
  5. The Journal of Nutrition. 2003;133(5):1457S-1459S.
  6. Ewha Med J. 2017;40(1):17-21.
  7. Nutrients. 2015;7(5):3094-3118.
  8. Journal of Inorganic Biochemistry. 2015;153:1-12.

Food supplements should not be used as a substitute for a varied diet. Store in a cool, dry place away from direct sunlight. Keep out of reach of young children. Do not exceed the daily dose.  If pregnant, or breastfeeding, or if you are taking medication, or on medical care, consult your physician prior to use.  While we work to ensure that product information on our website is correct, on occasion manufacturers may alter their ingredient lists.  Actual product packaging and materials may contain more and/or different information than that shown on our website.  All information about the products on our website is provided for information purposes only. We recommend that you do not solely rely on the information presented on our website.  Please always read the labels, warnings, and directions provided with the product before using or consuming a product.  In the event of any safety concerns or for any other information about a product please carefully read any instructions provided on the label or packaging and contact the manufacturer.  Content on this site is not intended to substitute for advice given by medical practitioner, pharmacist, or other licensed health-care professional. Contact your health-care provider immediately if you suspect that you have a medical problem.  Information and statements about products are not intended to be used to diagnose, treat, cure, or prevent any disease or health condition.  The customer reviews are only moderated for offensive content – they should not be regarded as medical or health advice; no reliance should therefore be placed on them; and they are not endorsed by Victoria Health. If you have any health problems or questions regarding the suitability of any product please contact a health professional. Products are not medicinal unless otherwise stated. Victoria Health accepts no liability for inaccuracies or misstatements about products by manufacturers or other third parties. This does not affect your statutory rights.

Product Code: LFX0023