Vitamin D3
20,000 IU
120 Capsules

High-dose capsules containing 20,000 IU vitamin D3 each. Vegetarian, premium active ingredient from the USA, custom-made product, no hidden additives, with natural vitamin E. Embedded in high-quality, protective MCT carrier oil (coconut) produced in Germany. Optimal bioavailability, non-GMO, produced in the EU. 120 capsules
  • Full 20,000 IU (500µg) vitamin D3 per capsule: High-dose for rapid replenishment of bodily supplies, and for combination with cofactor vitamin K2
  • Ultra-pure, premium vitamin D3 from lanolin (vegetarian), custom-made, no additives
  • With high-quality MCT coconut oil in powder form, for optimal absorption
  • With vitamin E for protection of the valuable active ingredients
120 capsules

Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€319.35 / 1kg
In stock

Premium Bioactive Ingredients

  • 20,000 IU (500µg) D3 per high-dose capsule: for flexible combination with vitamin K2, and rapid replenishment of vitamin D supplies
  • Premium, ultra pure D3 derived from lanolin (vegetarian), from a reputable and specialised producer in the USA
  • High-quality MCT (coconut) oil in powder form for optimal absorption
  • With natural vitamin E to protect the valuable ingredients
  • D3 content guaranteed by the German Federal Joint Committee (G-BA)

How are we different?

All of our vegetarian vitamin D products contain premium vitamin D3 as an active ingredient, which is custom-made according to our strict specifications, and without any additives except vitamin E and a high quality MCT coconut oil as a carrier oil. This product is notable for its absolute purity and guaranteed vitamin D3 content. Vitamin D3 products often contain a wide variety of different additives, including some which are highly questionable but are not legally required to be declared, such as synthetic vitamin E, ascorbyl palmitate, silicon dioxide, modified starch, sucrose, denatured vegetable oils, and maltodextrin. However, our vitamin D3 is ultra pure due to our unique production process. It is custom-made for us by a specialised manufacturer according to our strict specifications and is completely free from common hidden additives.

Vitamin D is a fat-soluble vitamin that can only be absorbed by the body when combined with fats. Our vitamin D3 is therefore dissolved in MCT coconut oil and then dried to make a fine powder. The powder also contains fat-soluble vitamin E in the form of natural D-alpha-tocopherol. As a result, it exists in a form that can be readily absorbed by the body. The high-quality, medium-chain fatty acids of the MCT oil and vitamin E offer valuable nutrients themselves.

In order to achieve an even distribution of vitamin D3 in the active ingredient powder and thus a precise dosage, only highly pure, 100% nanoparticle-free microcrystalline cellulose is used. Our vitamin D3 powder is also rich in high-quality MCT (coconut) oil for optimal absorption of fat-soluble vitamin D3. Natural vitamin E protects the active ingredient from oxidation, allowing for a prolonged shelf life.

The only other ingredient we use is premium acacia fibre cultivated without pesticides. In contrast to the usual synthetic fillers, we use an ultra pure natural filler that is also rich in dietary fibre. Our acacia fibre is sourced from climate neutral, resource-saving, sustainable and fair cultivation.

For the capsule shells we use custom-made HPMC capsules that, unlike most other HPMC capsules that can be found on the market, are 100% free from controversial additives such as carrageenans and PEG. We use environmentally friendly amber glass jars for the packaging of this product.



  • 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


Vitamin D

Vitamin D3 occurs in nature almost exclusively in animal sources and particularly in fish, dairy products, eggs and meat. Plants, such as lichens and various fungi contain only very small amounts of the much less effective vitamin D2.

Vitamin D plays a very important role. It is one of the few vitamins that is not absorbed directly from food, but rather produced by skin cells from sunlight. It is not a vitamin in the traditional sense of the word, but rather a pro-hormone.

In contrast to many other vitamins, vitamin D is converted into an important hormone which regulates cell functioning and bodily processes. Almost all bodily cells have special receptors for the vitamin D hormone that are dependent on sufficient supply.

Vitamin D is still being intensively researched. New mechanisms of action of this fascinating vitamin are discovered almost every year. So far, the following statements on vitamin D have been released by the EU (EFSA):

Vitamin D contributes to

  • Normal absorption and utilisation of calcium and phosphorus
  • Normal blood calcium levels
  • The maintenance of bones
  • The maintenance of normal muscle function
  • The maintenance of healthy teeth
  • Normal function of the immune system

Vitamin D has a function in cell division.


Recommended Dosage

Take 1 capsule with food every 20 days.

Note: Not suitable for children under the age of 7.

Daily Requirements

The contradictory information surrounding daily requirements for vitamin D intake can be very confusing. Daily recommendations vary greatly between different organisations and governing bodies.

For example, the EU recommends a daily intake of 200 IU for adults, while the German Nutrition Society (DGE) recommends 800 IU.

However, numerous researchers and nonprofit organisations believe that these recommendations are too low and are not enough to prevent deficiency. An intake of at least 1,500-2,000 IU or 3,000-6,000 IU are recommended by the American Endocrine Society and the Vitamin D Council (USA), respectively.

Food Supplement

Do not exceed the recommended dose. Food supplements cannot replace a balanced and varied diet. Keep out of reach of children. Not suitable for children under the age of 7.


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


Ingredients: Microcrystalline Cellulose, MCT Oil, Vitamin E (in the form of natural D-Alpha-Tocopherol), Vitamin D3 (vegetarian),

Capsule shells: Hydroxypropyl Methylcellulose.

Ingredients per 20-Day Dose (1 Capsule) % NRV*
Vitamin D3 20,000 IU (500µg) 10,000%

* % Nutrient Reference Value

In total: 120 capsules (2,400,000 IU) vitamin D3 / jar

Product Details

German Pharmaceutical Number (PZN) 15194205
Origin Premium vitamin D3, custom-made without additives
Prebiotic acacia fibre from sustainable cultivation in Africa
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 bottle 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.

See tests

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

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