Vitamin D3


  • Contributes to the maintenance of normal bones
  • Contributes to the maintenance of normal muscle function
  • Contributes to the normal function of the immune system
  • Made in a pharmaceutical grade environment
  • 50µg (2,000 IU) of vitamin D3 per capsule

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What is Vitamin D3?

Vitamin D3 is needed by the body to maintain proper function of the muscles and the immune system, as well as protecting against diseases and maintaining healthy bones and teeth. Reflex Nutrition’s Vitamin D3 supplements are produced in a pharmaceutical grade environment, using the most recent research in science and technology to ensure you get the very best from each of our capsules.

Vitamin D is known as the sunshine vitamin, as unless taken through supplements, it is produced in its most concentrated form by the skin when it is exposed to sunlight. It is a fat soluble vitamin which affects up to 2,000 of the body’s cells.

Who is it for?

Our Vitamin D3 supplements have been formulated for both men and women who want to increase their levels of Vitamin D. Vitamin D3 supplements are often taken by athletes and sports enthusiasts to aid immune function, bone and muscle function, and calcium levels.

Reflex Nutrition’s Vitamin D3 is not suitable for vegetarians.

What are the benefits?

  • Contributes to normal muscle function
  • Aids bone health
  • Helps maintain normal immune system function
  • Increases absorption of calcium

Vitamin D3 is of far higher quality than the widely used D2, which is proven to be of significantly less biological value. Vitamin D contributes to normal blood calcium levels and the maintenance of normal bones and muscle function, as well as contributing to the normal function of the immune system.

Recommended Usage

Take one capsule daily with food


The science behind it

Vitamin D is a vital vitamin for the body to function properly. The body naturally produces it when the skin reacts to being in the sunlight, and it is essential for health and vitality. It is important to maintain a healthy level of the vitamin, as it manages calcium levels in your blood, as well as helping cells to communicate effectively through the body.

Vitamin D3 is formed using ultraviolet B rays from the sun (UVB), and is thought to be three times as potent as Vitamin D2 when raising levels of 25-hydroxycholecalciferol, which travels to the kidneys to turn into Vitamin D. Further, D2 can even be toxic when too much is taken. This is not the case with D3, and any excess is simply processed through the kidneys and excreted as urine.

Anything else?

Each bottle contains 100 capsules.

For more information about why we recommend supplementing with vitamin D and the optimum doses and levels, read our Vitamin D Guide

Suitable for

  • Vegetarians: No
  • Vegans: No
  • Coeliacs: No

Vitamin D3 has been certified as Halal safe by The Halal Trust.

For further allergy advice, please read our suitability guide.


In each two-piece Bovine Gelatin Capsule: Bulking Agents (Maltodextrin, Cellulose), Cholecalciferol (Vitamin D3), Anti-Caking Agents (Magnesium Stearate, Silicon Dioxide, Calcium Silicate).

Nutritional Profile

Vitamin D3 typical values - Reflex Nutrition

Product Label



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