Vitamin D3 4,000iu

100mcg (4,000iu) naturally sourced high strength vitamin D3

120 Capsules

Vitamin D3 4,000iu

120 Capsules

Key Features

  • 100µg (4,000iu) Vitamin D3
  • Optimum daily dose for athletes
  • Helps to maintain normal muscle function
  • Provides support for the immune system

Product Overview

  • Suitable for Vegetarians
  • Gelatin Free
 Download Batch Certificate 62577

Vitamin D3 4,000 IU is the optimum level recommended by nutritionists to quickly correct deficiency. If you spend time training indoors or have limited exposure to natural sunlight you may be vitamin D deficient. Formulated using vitamin D3, the form of vitamin D most readily absorbed by the body, each small ‘easy-swallow’ capsule provides 4,000 IU of vitamin D3. Vitamin D3 plays a number of important roles in the body including providing support for immune health, muscle health and bone health.

Vitamin D can be obtained through food sources such as eggs, fortified cereals and oily fish, but is predominantly synthesised in the skin through exposure to sunlight.

Vitamin D deficiency is common across populations throughout the UK and as a result of a low level of exposure to sunlight, vitamin D synthesis becomes almost impossible in the winter.

Deficiency has also been observed amongst athletes including those who mainly train outdoors. This has a detrimental impact on bone health and may have wider health consequences which negatively affect athletic performance.

Vitamin D3 supplementation can play an important role in correcting vitamin D deficiency to ensure the maintenance of adequate to optimal levels.

Product Origins

The vitamin D in all our formulations is the naturally occurring D3 form (also known as cholecalciferol). Cholecalciferol is produced by processing 7-dehydrocholesterol which is extracted from the lanolin found in sheep's wool.

Lanolin is a waxy substance which helps protects the skin of sheep against rain and other environmental factors. It is extracted from wool grease and wool wax alcohols obtained from the cleaning of wool after the shearing of sheep. The lanolin is then purified which results in a substance called 7-dehydrocholesterol, the same precursor of vitamin D found in our skin. The 7-dehydrocholesterol is exposed to ultraviolet light, which replicates the chemical reaction occurring in our skin when we soak up sunlight. The final product is then stabilised on a powdered carrier to enable the manufacture of tablets.

The result of this extraction and purification process is a highly concentrated form of vitamin D3 which offers 99% purity and unparalleled quality.

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Product Information


One capsule daily, or as advised by your nutritionist.
After a period of 16 weeks, intake should be reviewed.
Do not take on an empty stomach.

Key nutritional values

Typical values, % NRV (where applicable) in brackets:

Typical values per capsule, % NRV (where applicable) in brackets:

Natural Source Vitamin D3:...100µg (2,000)
equivalent to:...........................4,000iu


Cellulose, Vitamin D Preparation (Sucrose, Corn Starch, Gum Arabic, Medium Chain Triglycerides, Tricalcium Phosphate, Cholecalciferol, DL-alpha-Tocopherol), Hypromellose, Magnesium Stearate - of vegetable origin, Silica.

Capsule Length


Batch Expiry Date


Supplement should be taken under the supervision of a nutritionist or health practitioner. Monitoring of vitamin D is advisable. If you are taking any prescribed medication or have any medical conditions always consult your doctor of pharmacist before taking vitamins and supplements. Keep out of sight and reach of young children. Do not exceed recommended intake, Food supplements must not be used as a substitute for a varies and balanced diet and a healthy lifestyle. Store in a cool, dry place.

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Independent Reviews for Vitamin D3 4,000iu

The views expressed below are the personal opinion of Healthspan customers. Healthspan does not endorse these views, nor should they be regarded as health claims or medical advice. All reviews are collected by a 3rd party called Feefo. Find out more

Overall Rating: 4.79 / 5 stars, based on 24 reviews Below you can find the latest 25 reviews. To access the full list please click here

05 December 2016


20 November 2016


17 November 2016

Perfect and the best on the market, again

06 November 2016


27 October 2016

More bounce in my step but still exhausted. Have chronic fatique so need to give it more time.

17 October 2016


12 October 2016

Great quality product. High Levels in an easy to take capsule. Highly recommended!

11 October 2016


10 October 2016

Packaging u clear for Vit D

09 October 2016

Feeling less tired after a few months usage. Hoping they will help me with my fibromyalgia. With winter on its way I feel confident that these tablets will be doing me a lot of hood.

06 October 2016


03 October 2016

What more can I say? Best in the market and the only one that provides the dosage my neurologist recommends (I have MS). I don't think I would trust anyone else.

23 September 2016

Only just started taking them

22 September 2016


22 August 2016

Embarrassing packaging to receive through the post. Overall impression from the colour (gold and black??? really??) looks like condoms not a health product. Very embarrassing.

21 August 2016

This is the only quality 4000iu/100 ug one tablet dose on the market, small size tablet too. If you may be deficient in Vit D (aren't we all living the UK?!) best product available - after lots of research!

17 August 2016


14 August 2016


12 August 2016

I have been looking for D3 at this level, unsuccessfully until I found this. It is great !!

07 July 2016


20 June 2016

see above. This item was ordered over the internet. Again excellent service