200µg Capsules


Organic selenium from a water extract of Indian mustard seeds. 200µg of selenium per capsule, occuring in a natural diversity of forms of selenium, plus phytochemicals. The only additive is acacia fibre, which is used as a natural filler. Vegan, laboratory tested. 2x120 capsules
  • High-dose organic selenium: 200µg per capsule
  • 100% natural, from mustard seeds (Brassica juncea)
  • Completely plant-based forms of selenium combined with naturally occuring phytochemicals
  • 20:1 water extract standardised to 0.5% natural selenium
  • Optimal absorption rate of 80-100% (inorganic selenium: only 50-60%)
  • Selenium supports hair, nails, thyroid function and the immune system as well as protects cells against oxidative stress
  • Natural acacia fibre as the only other ingredient

Note: Payment can only be made via credit card or advance bank transfer for this product.

Customize High-Dose<br>Selenium<br>200<span style="protect-case">µg</span> Capsules
2 x High-Dose Selenium 200µg Capsules   + €0.00

* Required Fields

€18.80 €19.80

240 capsules

Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€400.00 / 1kg

Premium Bioactive Ingredients

  • 200µg of selenium per capsule
  • 20:1 water extract of mustard seeds (Brassica juncea) cultivated in India
  • 100% natural forms of selenium
  • Full-spectrum of natural, completely plant-based forms of selenium
  • Mustard seed extract standardised to 0.5% natural selenium
  • Highly bioavailable due to naturally occuring phytochemicals
  • Organic selenium: optimal absorption rate of 80-100% (whereas that of inorganic selenium is only 50-60%)
  • Gentle water extraction: no use of chemical solvents such as acetone or N-hexane
  • Selenium content comfirmed via laboratory testing
  • High-quality, natural filler: acacia fibre cultivated without the use of plant protection products

How are we different?

This mustard seed extract contains a rich variety of 100% natural, plant-based and organic forms of selenium. Mustard seeds have a particularly high concentration of L-selenomethionine, which is the most bioavailable and important form of selenium for humans. The many other forms of selenium naturally present in the seeds, as well as the naturally occuring phytochemicals, complement this natural complex.

We source our water extract of mustard seeds from an innovator in India. While plant extractions are commonly performed using chemical solvents, this extraction process involves only water — no solvents such as N-hexane, methanol or acetone are used. Our 20:1 water extract of mustard seeds is standardised to 0.5% natural selenium. Regular laboratory testing guarantees the selenium content as well as the absence of heavy metals and pesticides.

The only other ingredient is premium acacia fibre, cultivated without the use of plant protection products. In contrast to microcrystalline cellulose, a widely used synthetic filler often mixed with nanoparticles, gum arabic is a natural, fibre-rich food. Our fair trade acacia gum is climate neutral and is sustainably cultivated to conserve resources.

For the capsule shells we use custom-made HPMC capsules that, unlike most other HPMC and pullulan capsules on the market, are 100% free from controversial additives such as carrageenans and PEG. We then package this product in environmentally friendly amber glass.


  • Premium active ingredients in their purest form
  • Sourced directly from the world’s best producers
  • Our select raw materials are the basis of all our formulations
  • Complete avoidance of all unnecessary additives and adjuvants
  • Exclusive use of valuable natural ingredients for additives
  • We voluntarily declare all ingredients
  • All extractions performed without the use of chemical solvents
  • Custom production when necessary, in order to achieve the highest possible level of purity
  • Independent laboratory testing available on product pages
  • Raw materials sourced only from premium suppliers who are committed to fair working conditions
  • Amber glass and compostable pouches used for packaging
  • Vegan capsule shells, free from PEG and carrageenans
  • Packaged in the EU according to HACCP, GMP and ISO 22000:2018 standards
  • Stored in non-toxic containers
  • Shipped in mineral oil-free boxes
  • All products guaranteed 100% free from magnesium stearate, silicon dioxide, nanoparticles (no legal opportunism), genetic engineering, artificial colours and flavours, titanium dioxide and added sugar & sweeteners



Selenium is an essential trace element and an integral part of more than 25 enzymes. These enzymes, known as selenoproteins, play a role in several important body functions: normal immune system and throid function, the protection of cells from oxidative damage and the maintenance of healthy hair and nails.

Selenium in Mustard Seed

The mustard plant is a member of the cruciferous family. In addition to organic and inorganic selenides, mustard seeds are rich in the selenium-containing amino acid selenomethionine. With an absorption rate of 80-100%, organic selenium is highly bioavailable and occurs in combination with other compounds found in the seeds.

Health Benefits of Selenium

According to the European Food Safety Authority (EFSA), selenium contributes to:

  • Protecting cells against oxidative stress
  • The normal functioning of the nervous system
  • Normal thyroid function
  • Normal sperm cell formation
  • Maintaining normal hair
  • Maintaining normal nails


Recommended Dosage

Take 1 capsule (200ug selenium) with 200ml water daily.

Daily Requirements

To avoid developing a deficiency, the official daily requirement for selenium according to the German Nutrition Society (DGE) is 30µg-70µg (NRV: 55µg).

Food Supplement

Do not exceed the recommended dose. Food supplements cannot replace a balanced and varied diet. Keep out of reach of children.


Store in a cool, dry place away from direct sunlight and heat.


Ingredients: Acacia Fibre, Mustard Seed Extract.
Capsule shells: Hydroxypropyl Methylcellulose.
Contains: 180 capsules

Ingredients per Capsule % NRV*
Mustard Seed Extract 40mg -
of which selenium 200µg 363.6%

* Nutrient Reference Value

Per capsule: 200µg selenium
In total: 24,000µg selenium/jar

Product Details

German Pharmaceutical Number (PZN) 17993399
Origin Mustard seed extract from India
Production In-house production in Europe, bottling and encapsulation in the EU according to HACCP, GMP/ISO 22000:2018 standards
Finished products packaged in amber glass jars and stored in non-toxic containers
Shipping in mineral oil-free boxes
Capsules Plant-based cellulose (HPMC). Vegan
Premium HPMC quality: Free from controversial additives such as carrageenans and PEG
Packaging Amber glass jar to protect against light and oxidation (free from plasticisers and BPA)
To Reuse Remove product label by soaking the jar in warm water for 5 minutes. Glue residue can be removed with dish soap.

Laboratory Tests

The purity of our formulas is important to us. This is why we have both our raw ingredients as well as our finished products extensively tested by independent laboratories to confirm purity and active ingredient content. Here, we have provided the results of some of the tests carried out on this product.

Sunday Natural

Our Philosophy

For thousands of years, cultures all over the world have been using medicinal plants and nutritious foods to naturally foster and maintain vitality and good health.

With our products, we try to emulate this ancient wisdom as much as possible.

Consequently, our philosophy is simple: everything we do meets the highest standards of quality and purity; our focus is on organic and natural ingredients.

We follow this philosophy with meticulous care on all levels and down to every last detail.

Learn more.

Our recommendations

The image could not be loaded.