Hermetica Superfood Encyclopedia
The Short Answer
A supplemental form of the essential trace mineral selenium that supports thyroid function, immune defense, and protects cells from oxidative damage.
CategoryVitamin & Mineral
GroupMineral
Evidence LevelModerate
Synergy Pairings4
Health Benefits
Enhances glutathione peroxidase activity, a key enzyme in combating oxidative stress and protecting cellular integrity.
Promotes cytokine and antibody production, strengthening both innate and adaptive immune defenses.
Aids the conversion of inactive T4 to active T3 thyroid hormone, optimizing thyroid hormone balance.
Supports cellular integrity by reducing DNA damage and regulating apoptosis, contributing to cancer prevention.
Protects endothelial cells from oxidative damage, thereby reducing the risk of atherosclerosis and supporting cardiovascular health.
Improves sperm quality and ovulation, supporting fertility in both males and females.
Origin & History
Sodium selenite is an inorganic salt of selenium, a vital trace element. It is required for the synthesis of selenoproteins, which regulate antioxidant defense, immune function, and thyroid hormone metabolism. This form is widely used in supplements and fortified foods to address selenium deficiencies and support cellular protection, hormone regulation, and reproductive health.
“Modern biochemical compound without traditional medicinal history. Its role as an essential trace element was identified through nutritional science and clinical research.”Traditional Medicine
Scientific Research
Sodium selenite is a widely studied form of selenium supplementation, with research demonstrating its stability, bioavailability, and effectiveness in supporting metabolic and immune functions. Clinical trials and observational studies highlight its role in enhancing antioxidant defense and thyroid hormone regulation.
Preparation & Dosage
Common Forms
Available in tablets, capsules, multivitamins, and fortified foods.
Recommended Dosage
55 mcg/day for adults; upper safe limit is 400 mcg/day
Timing
Best taken with meals to improve absorption.
Synergistic Pairings
Often combined with Vitamin E for enhanced antioxidant benefits.
Nutritional Profile
- Selenium: Essential for selenoprotein synthesis, which includes key antioxidant enzymes like glutathione peroxidase.
- Thyroid Hormone Regulation: Supports deiodinase enzymes crucial for activating thyroid hormones.
- DNA Protection: Reduces free radical-induced genetic damage.
- Immune Modulation: Enhances the production of immune mediators such as cytokines.
Synergy Stack
Hermetica Formulation Heuristic
Mineral cofactor
Immune & Inflammation | Cardio & Circulation
Frequently Asked Questions
What is sodium selenite?
Sodium selenite is an inorganic form of selenium, an essential trace mineral required for producing selenoproteins — enzymes that protect cells from oxidative damage and regulate thyroid hormone metabolism. It is commonly used in supplements and fortified foods to prevent selenium deficiency.
How much sodium selenite is safe to take?
The recommended dietary allowance for selenium is 55 mcg per day for adults. Supplemental doses of 100–200 mcg per day are used therapeutically. The upper tolerable limit is 400 mcg per day from all sources — exceeding this can cause selenosis, a toxicity condition with symptoms like hair loss and nausea.
Is sodium selenite better than selenomethionine?
Selenomethionine (organic form) has higher bioavailability (~90% vs ~50–60%) and is better retained in body tissues. However, sodium selenite is effective for raising selenoprotein activity and is widely used in clinical settings. Selenomethionine may be preferred for long-term supplementation, while sodium selenite is commonly used in fortification programs.
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