- Sunferol® D3 as a registered raw material of Sunday Natural Products GmbH
- Unique purity and laboratory-tested active ingredient content
- Premium active ingredient quality: vegetarian vitamin D3
- Regularly lab-tested for solvent residues; values are well below legal limits
- No hidden additives: pure vitamin D in MCT oil + vitamin E
- High-quality MCT coconut oil from cultivation without synthetic plant protection products
- The naturally occurring and biologically active form of vitamin E
- Optimal stability and shelf life due to purity, ideal carrier oil and natural forms of vitamin E to protect against oxidation
Vitamin D3 Drops 2000 IU, XL
Vitamin D3 with 2000 IU per drop for flexible dosing. Contains the branded ingredient Sunferol® suspended in MCT coconut oil for optimal bioavailability. Glass bottle with pipette. 1750 liquid drops
- Vegetarian vitamin D3 liquid drops for increased needs
- Branded vitamin D3 Sunferol® with verified active ingredient content
- 2000 IU (50µg) pure vitamin D3 per drop
- Vitamin D for normal immune system, bones & calcium utilisation
- Particularly pure vitamin D3 gently extracted from lanolin
- True Clean Label®: vegetarian, lab-tested, free from hidden additives
- Take 1 drop daily with a meal
How are we different?
Natural Vitamin D3
Vitamin D3 naturally occurs almost exclusively in animal sources as the bioactive form of vitamin D. Plants, such as lichens and various fungi, contain only very small amounts of the much less effective form of vitamin D2. Lanolin, the wax found in sheep's wool, is a proven source for obtaining bioactive vitamin D3 (cholecalciferol). A multi-stage process, which includes gentle extraction and intensive purification, results in a highly pure crysallised D3 that is used as the active ingredient for our vegetarian Sunferol® D3 formulation.
Absolute Purity: No Hidden Additives
Our branded active ingredient Sunferol® D3 is a special formulation with high-quality vitamin D3 obtained from the wool wax of sheep. For optimal intake and maximum stability, we suspend our premium D3 in MCT coconut oil.
Conventional vitamin D3 active ingredients are often mixed with a whole range of questionable additives, including synthetic vitamin E, ascorbyl palmitate, silicon dioxide, modified starch, sucrose, denatured vegetable oils and maltodextrin. However, our vitamin D3 is specially manufactured according to our specifications, thereby avoiding such hidden additives. The purity of this raw material means only a small amount of bioactive vitamin E needs to be added as an antioxidant to ensure optimal stability and shelf life.
To maintain the excellent quality of our products, they are regularly tested in an independent laboratory for active ingredient content, freshness and possible contaminants such as heavy metals.
MCT Coconut Oil for Optimal Absorption & Protection
Vitamin D is a fat-soluble vitamin that can only be absorbed by the body when combined with fats. For this reason, Sunday Natural's vitamin D3 is dissolved in high-quality MCT oil. In contrast to other carrier oils (such as olive oil), pure MCT oil offers optimal protection for fat-soluble vitamins, thus ensuring maximum stability of the active ingredients. The medium-chain fatty acids in the carrier oil constitute valuable nutrients themselves. Our oil, which is processed in the Netherlands, is grown without the use of synthetic plant protection products.
Simple & Precise Dosage
Oils are easy to use and are therefore suitable for those who have difficulty swallowing capsules and tablets. They also offer the advantage of direct absorption through the oral mucosa, meaning the fat-soluble vitamins are immediately bioactive. All our oils come in amber glass bottles with a glass dropper for precise usage.
- Premium active ingredients in their purest form
- Sourced directly from the world’s best producers
- Our select raw materials as the basis of all our formulations
- Complete avoidance of all unnecessary additives and adjuvants
- Only physiologically valuable ingredients used as natural additives if possible
- We voluntarily disclose every ingredient
- All extractions performed without the use of chemical solvents whenever possible
- Custom production when necessary, in order to achieve the highest possible level of purity
- Systematic quality testing in independent laboratories
- Raw materials sourced exclusively from premium suppliers who are committed to fair working conditions
- High-quality bags featuring an aroma barrier, compostable pouches and amber glass used for packaging
- Vegan capsule shells without PEG or 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, nanoparticles (no legal opportunism), titanium dioxide, genetic engineering and artificial colours and flavours
- We avoid added sugar and sweeteners whenever possible – we only deliberately add them when necessary, such as for functional or product-specific reasons
Effects
Vitamin D
Vitamin D3 naturally occurs almost exclusively in animal sources, 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 form of vitamin D2.
Vitamin D plays a very important role in the body. 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
- Cell division
Dosage
Directions
Take 1 drop every other day with a meal on a spoon or in a drink. Shake well before use.
Daily Requirements
The contradictory information surrounding daily requirements for vitamin D intake can be 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.
Food Supplement
Do not exceed the recommended daily intake. Food supplements are not a substitute for a balanced, varied diet and a healthy lifestyle. Keep out of reach of young children.
Storage
Store in a cool, dry place away from direct sunlight and heat. To optimise shelf-life, keep in the refrigerator.
Contents
Ingredients: MCT Coconut Oil, Vitamin D3¹ (MCT Coconut Oil, Cholecalciferol, Antioxidant: Tocopherol-Rich Extract).
¹ Sunferol®. Sunferol® D3 is a registered trademark of Sunday Natural Products GmbH.
| Nutrition Information per Drop** / per Day | % NRV*** | |
| Vitamin D3 | 50 / 25µg (2000 / 1000 IU) | 1000 / 500 |
* 2-day dose
** Nutrient Reference Value
Product Details
| Production | Bottling and encapsulation in the EU according to HACCP, GMP and ISO 22000:2018 standards. In-house capsule production in Europe. High-quality custom production of liquid products and (functional) foods for sports and everyday use. Production of tablets by selected partners according to HACCP / GMP standards. Storage in amber glass or product-specific, food-safe containers according to EC 10/2011. Shipping boxes made from safe, sustainable materials. |
| Packaging | Amber glass 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.





