Nutri-Leaf
Immunity Complex
1 capsule per dayHPMC vegetable capsule
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Ingredient Deep Dive · Selenium
Selenium
The antioxidant mineral that supports thyroid and immune health.
Selenium is a trace mineral with powerful antioxidant properties. Found in our Immune Complex as L-selenomethionine, the preferred form for absorption and retention.
What is Selenium?
Selenium is an essential trace mineral that is incorporated into selenoproteins — a family of proteins that play critical roles in antioxidant defence, thyroid hormone metabolism, and immune function. The human body contains at least 25 different selenoproteins, including the glutathione peroxidases (which protect cells from oxidative damage), thioredoxin reductases (which regulate cellular redox balance), and iodothyronine deiodinases (which activate and deactivate thyroid hormones). Selenium status directly influences the activity of these enzymes.
Selenium is particularly notable for its role in male fertility — it is required for normal spermatogenesis and is concentrated in the testes. The mineral also supports hair and nail health, with selenium deficiency being associated with characteristic changes to both tissues. Like all trace minerals, selenium must be obtained through diet, and its levels in plant foods vary dramatically depending on the selenium content of the soil in which they are grown.
EFSA-approved health benefits
The European Food Safety Authority (EFSA) has confirmed that selenium:
- contributes to normal spermatogenesis
- contributes to the normal function of the immune system
- contributes to normal thyroid function
- contributes to the protection of cells from oxidative stress
- contributes to the maintenance of normal hair
- contributes to the maintenance of normal nails
Why we use Selenium in Nutri-Leaf formulas
Nutri-Leaf uses selenium-L-methionine, an organic form of selenium that closely resembles the selenium found naturally in foods. Our Immune Complex provides 50µg of selenium per capsule (91% NRV) alongside zinc, vitamin C from rose hip, echinacea, and ginger — all in one daily capsule with a plant-based HPMC shell.
Products containing Selenium
The Nutri-Leaf product featuring selenium is Immune Complex, where it works alongside zinc, vitamin C from rose hip, echinacea, and ginger for multi-faceted immune and antioxidant support — all in one daily capsule.
Explore how selenium and other nutrients support immune health on our Immune Support and Healthy Aging guides. Learn more on the Ingredient Philosophy page.
Food supplements are not a substitute for a balanced and varied diet and a healthy lifestyle.
Ingredient profile
Understanding selenium — the trace mineral with a big job.
- What it is
Selenium is an essential trace mineral that is incorporated into selenoproteins — a family of proteins that play critical roles in antioxidant defence. Nutri-Leaf Immune Complex provides it as selenium-L-methionine, an organic form that closely resembles the selenium found naturally in foods.
- Why we use it
Every ingredient in our formulas serves a specific nutritional purpose. What you see on the label is exactly what’s in the capsule.
- German quality sourcing
All ingredients are sourced to meet German and EU pharmacopoeia quality standards, then manufactured into finished supplements in Germany by an FSSC 22000 certified food-supplement producer.
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Benefits & research
- Role in the body
Selenium contributes to the protection of cells from oxidative stress, the normal function of the immune system and normal thyroid function.
- Approved health claims
According to the European Food Safety Authority (EFSA), selenium contributes to the protection of cells from oxidative stress, the normal function of the immune system, normal thyroid function and the maintenance of normal hair and nails.
- EU quality standards
Nutrient Reference Values (NRVs) are set by EU Regulation 1169/2011. Our formulas are designed to provide meaningful percentages of these reference values per daily serving.
Nutri-Leaf formulas featuring this ingredient
Supplements containing Selenium.
Immune Complex
Related reading
Guides about ingredients and nutrition.
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Read guideFrequently asked questions
Your questions about Selenium and quality.
Discover German quality supplements
The antioxidant mineral your thyroid needs — selenium in every dose.
manufactured in Germany by an FSSC 22000 certified producer. Plant-based HPMC capsules. Free shipping from €20 across the EU.
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