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Super Strength Vitamin D3 Tablets - 4000iu

Premium Natural Source Vitamin D3 - helping to maintain a healthy immune system

623 reviews9810020
Only 11.6p per tablet
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Only 9.5p per tablet
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Key features

  • Super strength 1 a day tablet
  • Helps build strong bones and teeth
  • Ideal strength to quickly correct deficiency
  • 2000% Nutrient Reference Value
Super Strength Vitamin D3 4000iu tablet view
Tablet Size
8mm Round tablet
  • Description
  • Product Information
  • Feefo Reviews Reviews

Our Vitamin D3 4000iu is the optimum level recommended by nutritionists to quickly correct deficiency. Vitamin D supplementation can play an important role in correcting Vitamin D deficiency to ensure the maintenance of adequate levels in the body.

Vitamin D plays a number of crucial roles in the body including providing support for immune health, muscle health and strong bones and teeth. 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 - hence why it is often referred to as the 'sunshine vitamin'.

Most healthy adults should theoretically be able to get enough Vitamin D from being outside in the sunshine, however Vitamin D deficiency is very common throughout the UK. This is as a result of a low level of exposure to sunlight, making Vitamin D synthesis almost impossible during the winter.

High strength, natural form tablet

Our 4000iu high strength Vitamin D supplement provides 100µg (2000% Nutrient Reference Value) in an 8mm round, odourless tablet with no coating. We use a high quality natural form of Vitamin D, Cholecalciferol (Vitamin D3) in this supplement - the form of Vitamin D most readily absorbed by the body. Our manufacturing process gives us a highly concentrated form of Vitamin D3 which offers 99% purity and unbeatable quality.

Recommended as a food supplement by the FSA

The Food Standards Agency recommends that if you are pregnant or breastfeeding you should take a 400iu/ 10µg supplement of Vitamin D each day.

People who may be at risk from Vitamin D deficiency include people who:
  • are of Asian origin
  • rarely get outdoors
  • eat no meat or oily fish

Vitamin D and rickets in children

Vitamin D is crucial for the maintenance of health and strong bones, a deficiency in Vitamin D can cause rickets in young children which is a weakening and softening of bones which can lead to bone deformities. After World War II instances of rickets in the UK were dramatically fewer due to the British government introducing cod liver oil as a supplement - this is a great food source of Vitamin D. However between 2003 and 2013 the NHS reported a 430% increase in cases of rickets, an alarming statistic highlighting a growing health problem.  

Nutritional Information

One tablet typically provides: 
Vitamin D3 (4000iu) 100µg 2000% NRV

NRV = Nutrient Reference Value, µg = micrograms, iu = international units

Allergen Advice
Any allergens are highlighted in bold in the ingredients list.
List of Ingredients
Dibasic Calcium Phosphate, Microcrystalline Cellulose, Vitamin D3 Preparation (Sucrose, Modified Starch, Maltodextrin, Cholecalciferol), Stearic Acid, Magnesium Stearate, Silicon Dioxide
Dosage / Suggested Intake
Take one tablet per day with food. 
Legal Category
Food Supplement


Customer Reviews for Super Strength Vitamin D3 4000iu

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

Overall product rating 9.8 / 10 - 623 customers have independently reviewed and recommend Super Strength Vitamin D3 from 623 reviews (showing latest 25 reviews)
Review Date
Review Details
Fast delivery, minimal packaging, just a good honest no frills product. Will keep buying from them.
Service rating: Very satisfied and efficient
Product: Too early to tell yet. Taking it after bone scan
Service rating: Received vitality vitamins promptly. Thank you
Product: High strength vitamin D supplements i bought for potential protection from Covid 19
Service rating: Prompt delivery, safely packaged and as requested. Happily recommend and will use again.
Product: I was recommended Vit D3 after a blood test and the benefits are worthwhile. Also helps my husband fight SADo in Autumn/Winter.
Service rating: Products were dispatched quickly and I’m very impressed with the packaging. Instead of glass or plastic bottles they come in biodegradable, resealable packets. Will order again.
Product: Happy to have a effective D vitamin supplement going into the northern Scottish winter.
Service rating: Délai de livraison et produit ok,seul bémol les taxes de douane trop élevées
Product: Vitamines D3 essentielles pour le squelette.
Arrived quickly and well packaged good product
Service rating: Super fast delivery in letter box friendly packaging too.
Product: no problems, nice and small.
Service rating: Value for money, and prompt delivery, what more could I want?
Product: Strong immune system, even if the sun isn't shining
First class packing and quick delivery. This is my first time st buying and taking Vit.D so at the moment l can mot say if they make a difference but l am hoping they will.
Service rating: Good product - good value and rapid delivery. Great service - thank you.
Product: I am indoors mostly so vitamin D3 is important to me.
Service rating: did what i asked cant do better than that can you
Product: healthier persn helps me no end
Service rating: Very quick delivery.
Product: Value for money. Will order again.
Quick delivery, quality product.
Service rating: Good prices and quick service
Product: Taking these for fight against Covid19 as recommended vit and dosage to help
Service rating: Always buy from them they are actually amazing no fake vitamins amazing strength love them
Product: Amazing no issues just increased my dose been buying this for sometime
Service rating: Seems to be making me feel better and came quite quick. Good price so would use again
Product: Seem to be feeling better after a few weeks of taking it
Service rating: Super fast shipping, great prices and, fully compostable, space saving, letter box friendly packs.
Product: Very good price for quantity and quality
Service rating: As usual, the Just Vitamins products are really well priced ,well packed and delivered on time.
Product: excellent as usual !!!and delivered quickly
Service rating: I ordered vitamin D tablets and these arrived very quickly. I’ve just started taking the tablets so hope the benefits are as good as I’m expecting. Price was very good and I will be ordering from this company again.
Product: Fairly large tablet but easy to swallow. There aren’t many foods that contain vitamin D so I, taking it to protect my bones, heart and overall general health.
Loved them
Always a top service with a genuine product been using this place for years for all my vitamin needs. Recommended them 200%😁
excellent service
Service rating: Excellent every time
Product: Very good service every time
Service rating: As usual. Clear web site, purchases arrived quickly
Product: Started taking this when It was recommended to improve immunity for Covid