Vitamin D3 1000IU - Softgels

  • Vitamin D3 cholecalciferol
  • Immune system, bones & muscles
  • Small softgel
  • 1000IE / 25 mcg per softgel
  • 180 softgels
Out of stock
EUR 14.90
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Vitamin D3 Softgels 1000IE - Cholecalciferol by Doctor's Best

Vitamin D3 from Doctor's Best contains 25 mcg or 1000 IU per softgel. Vitamin D3 (cholecalciferol) plays an important role in the human body. Vitamin D receptors have been found in more than 30 types of tissues and organs, including immune cells, brain, muscles, heart, various glands and many more. Vitamin D affects expression of more than 2000 genes, which corresponds to about 10% of the total number of genes. In short, vitamin D is essential for our health.

Vitamin D has a positive effect on the immune system

Because vitamin D is so important to our health, numerous health claims obtain. Well-known claims are, for example, contributions to a properly functioning immune system, to strong bones and to the proper functioning of muscles.


  • Vitamin D promotes proper calcium and phosphorus levels in the blood
  • Vitamin D is necessary for normal bone growth and bone development in children
  • Vitamin D contributes to the maintenance of strong bones and benefits the skeleton
  • Vitamin D benefits the calcium balance
  • Vitamin D benefits the functioning of the muscles
  • Vitamin D is important for building strong teeth
  • Vitamin D has a positive effect on children’s immune system
  • Vitamin D contributes to the normal function of the immune system
  • Vitamin D has a beneficial effect on the cell division process
  • Vitamin D helps to reduce the risks of falling due to postural instability and muscle weakness. This beneficial effect is obtained with a daily intake of 20 micrograms of vitamin D.
  • Does not contain gluten or soy; GMO-free


Vitamin D was discovered in 1922 by Edward Mellanby. Vitamin D got its name from the fact that it was the fourth vitamin discovered, D being the fourth letter of the alphabet. Although this vitamin has been known since the early 20th century, regular specialists have long ignored vitamin D. However, the popularity and decline has increased enormously in recent years as new insights have emerged regarding the importance of vitamin D.

Vitamin D3 from the sun only in the summer

We acquire vitamin D3 by sitting in the sun largely uncovered, but avoiding sunburn, between May and October. This applies roughly to the hours between 11:00 am and 3:00 pm. It takes at least fifteen minutes to acquire enough vitamin D. Food contains a very small amount of vitamin D. So if we want to have a sufficient vitamin D supply, we have to rely on either the sun or supplementation.

D3 cholecalciferol sulfate

Vitamin D3 from the sun is not the same as vitamin D3 in a supplement. As soon as the skin is exposed to ultraviolet UVB radiation, vitamin D3 sulfate (cholecalciferol sulfate) is produced. Contrary to popular belief, this is not the same form as from supplementation, which is non sulfated vitamin D3 cholecalciferol. Ideally, we use the sun as much as possible in the summer to bring our vitamin D3 levels up to standard. During the winter months, supplementation can be a smart choice.

Additional recommendations

There are different ideas about the desired level of the amount of vitamin D in the blood. Reference values ​​in the Netherlands, for instance, start at a minimum of 30 nmol/l and are usually based on effects on bones and muscles. Vitamin D, however, plays a role in many other body processes as well. It is therefore important for anyone to maintain adequate levels. Vitamin D supplementation is recommended for men and women who spend a lot of time indoors or who have dark skin, for children, for the elderly and for pregnant women.

About Doctor's Best

Doctor's Best produces high-quality food supplements based on scientific research into good nutrition. The raw materials for the products are grown, developed and researched worldwide. Doctor's Best works together with nutrition scientists to produce strictly high-quality, highly effective supplements. Only branded raw materials are used and supplements have been thoroughly tested during every step of the production process, from raw material to end product. The manufacturing process is integrally based on the Guidelines for Current Good Manufacturing Practice (cGMP). Doctor's Best was founded in 1990 by a physician with an interest in wholesome nutrition. The company’s product range now includes more than 200 items.

Standardized brand products

In its products Doctor's Best almost exclusively uses proprietary and standardized brand materials of official trademarks that have been extensively researched. The authenticity of these ingredients is guaranteed in all products. Doctor's Best never uses alternatives. This results in a qualitatively superior line of supplements with very high bioavailability.

More Information
Product Name
Vitamin D3 1000IU - Softgels
Doctors Best
180 softgels
User Instructions

Take 1 softgel daily with food or as recommended by a healthcare practitioner.

Ingredients per Serving

1000 IU / 25 mcg of vitamin D3 (as cholecalciferol) 500% *.

EU Norm
*RDA = Recommended Daily Allowance
Other Ingredients

Extra virgin olive oil, softgel capsule (beef gelatin, glycerine, purified water).

Storage: see label. Keep out of the reach of children. Consult an expert before use in case of pregnancy, breastfeeding, illness or medication.
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