Se-Methyl L-Selenocysteine
- 200 mcg, 90 vegetarian capsules
- Item # 01879

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Se-Methyl L-Selenocysteine
- 200 mcg, 90 vegetarian capsules
- Item # 01879
Advanced form of the antioxidant selenium
Selenium is incorporated into proteins to make selenoproteins, which are important antioxidant enzymes that help block cellular damage from free radicals and support healthy cell function. Se-Methyl L-Selenocysteine (SeMC) is a naturally occurring seleno-amino acid that is synthesized by plants such as garlic and broccoli.
Se-Methyl L-Selenocysteine has been shown in clinical studies to be absorbed faster than other forms of selenium.
Se-Methyl L-Selenocysteine Benefits
- Supports healthy cell function & cell division
- Helps protect cells & tissues from oxidative damage
- Optimizes thyroid hormone synthesis & activity
- Supports immune health
Get the Selenium You Need
Selenium is an essential micronutrient for human health. In the body, it is incorporated into enzymes and other proteins to make vital compounds known as selenoproteins. Se-Methyl L-Selenocysteine (MSeC) is an organic selenium compound that is more absorbable than inorganic selenium salts typically used in supplements.
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Selenium is an essential micronutrient for human health. In the body, it is incorporated into enzymes and other proteins to make vital compounds known as selenoproteins.1 Perhaps the best-known selenoprotein is the antioxidant enzyme glutathione peroxidase. Each molecule of glutathione peroxidase requires four selenocysteine units and catalyzes a reaction in which a free radical is scavenged by glutathione.2
MoreThese products are not intended to diagnose, treat, cure, or prevent any disease.
- Free Radic Biol Med. 2018;127:153-159.
- Molecules. 2019;24(7)
- Aging Clin Exp Res. 2018
- Diagnostics (Basel). 2018;8(4)
- Hormones (Athens). 2018;17(2):183-196.
- Nutrients. 2018;10(9)
- Adv Cancer Res. 2017;136:153-172.
- Prostate Cancer Prostatic Dis. 2004;7(1):54-6.
- P. Surai. Selenium-vitamin E interactions: does 1+1 equal more than 2? 2003.
- J Agric Food Chem. 2015;63(20):5008-16.
- Cancer Prev Res (Phila). 2011;4(11):1938-44.
- Oncotarget. 2017;8(16):26312-26322.
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