Selenomethionine: A Natural Form of Selenium

  • Supports normal cell growth and development
  • Promotes glutathione production and immunity
  • A bioavailable source of an important trace mineral
Gluten Free
Soy Free

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Selenium is an important mineral involved in many systems and processes in the body. It works as a powerful antioxidant that protects the cells against oxidative stress. Selenium also contributes to normal thyroid function, helps with DNA synthesis and reproduction, and is required by the immune system.

You can find selenium in many foods such as eggs, brown rice, mushrooms, spinach, lentils, bananas, cashews, pork, and many others. Still, many of us have a very low intake of this mineral, and selenium deficiency may lead to a range of issues.

AOR’s SeMet formula provides selenomethionine, a superior and natural form of selenium. It is the main form of selenium stored by the body, is easily used, and has been shown to have a bioavailability at least 1.5 to 2 times higher than inorganic forms of selenium.

Selenomethionine is known to be directly and easily converted into methylselenol, which is the most important selenium metabolite in the body.


SeMet is Selenomethionine, a superior form of selenium found in plants when grown in exceedingly selenium-rich soil.


AOR™ guarantees that all ingredients have been declared on the label. Made without wheat, gluten, nuts, peanuts, sesame seeds, sulfites, mustard, soy, dairy, eggs, fish, shellfish or any animal byproduct.


Take 1 capsule daily with a meal, or as directed by a qualified health care practitioner.


Consult your physician if you are pregnant or lactating or if you have a medical condition, or are taking any medication. Keep out of reach of children.


*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Serving Size: 1 Capsule / Servings Per Container: 90
Per Capsule
Amount Per Serving
% Daily Value
Selenium (as Selenomethionine)
55 mcg

Other Ingredients: microcrystalline cellulose, capsule (hydroxypropyl cellulose purified water), sodium stearyl fumarate,and maltodextrin.

Ip C, Hayes C, Budnick RM, Ganther HE. “Chemical form of selenium, critical metabolites, and cancer prevention.” Cancer Res 1991 Jan 15; 51(2): 595-600.

Ip C. “Lessons from basic research in selenium and cancer prevention.” J Nutr. 1998 Nov; 128(11): 1845-54.

Limburg P.J. et al. “Randomized, Placebo-Controlled, Esophageal Squamous Cell Cancer Chemoprevention Trial of Selenomethionine and Celecoxib.” Gastroenterology. 2005. 129(3): 863-873.

Schrauzer G.N. “Selenomethionine: A Review of Its Nutritional Significance, Metabolism and Toxicity. Journal of Nutrition”. 2000. 130: 1653-1656.

Spallholz J.E. et al. Methioninase and selenomethionine but not Se-methylselenocysteine generate methylselenol and superoxide in an in vitro chemiluminescent assay: implications for the nutritional carcinostatic activity of selenoamino acids. Biochemical Pharmacology. 2004. 67(3): 547-554.

Whanger PD. “Selenocompounds in plants and animals and their biological significance.” J Am Coll Nutr. 2002 Jun; 21(3): 223-32.

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