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High Strength Vitamin D3 Tablets - 4000iu

Premium Natural Source Vitamin D3 - the form most readily absorbed by the body

(201 reviews)9810020
Buy High Strength Vitamin D3 Tablets - 4000iu
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  • Super strength 1 a day tablet
  • Helps build strong bones and teeth
  • Ideal strength to quickly correct deficiency
  • 2000% Nutrient Reference Value

Supplement Description

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 as the 'sunshine vitamin'.

Most healthy adults should theoretically be able to get enough Vitamin D from being outside in the sun, 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 was in very small numbers 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 and it is becoming an increasing issue.  

Nutritional Information


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

NRV means Nutrient Reference Value

Allergen Advice

Contains no allergens as listed in Food Labelling Regulations (1996) Schedule AA1
Free from Salt & Sugar
Contains no Artificial Colours, Flavours or Preservatives
Suitable for vegetarians

Cautions / Possible Side Effects

Keep out of reach of children.

List of Ingredients

Ingredients (in weight order): 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. 

Tablet Size

8mm Round tablet

Legal Category

Food Supplement

Customer Reviews for High 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 - 201 customers have independently reviewed and recommend High Strength Vitamin D3 from 201 reviews (showing latest 50 reviews)
Review Date
Review Details
Great service arrived on time, well packaged will use this company again.
Service Rating: Incredibly fast delivery and very competitive prices. Some great offers and deals too. And a huge range of products to choose from. Never disappointed.
Product: To help with arthritic pain
Great service and value for money
All good. Fast and efficient. Simple packaging. Thanks.. definitely use you again.
easy web site
got what I ordered
came quickly
I'm very satisfied
Service Rating: Fast, efficient service. Prefer the foil pouches as they take up l as room in the cupboard and are easier to open for arthritic hands than the usual plastic pots
Product: To compensate for Winter and the lack of sunshine as I suffer from SAD
cheap good delivery
Fast delivery and exactly as described. Will buy from again
Service Rating: Easy to use website, efficient payment system, fast delivery
Product: Don't know if it does anything but recommended by my nurse specialist
Service Rating: Easy ordering process, good prices and speedy delivery.
Product: Vitamins D4000, had low vitamin d a couple of years ago and was prescribed a course of 3 months, definitely did the trick, my nails and hair became stronger, but most importantly, my body aches and pains reduced dramatically helping me feel more alert etc. I again had started suffering with the same negative symptoms now for about 5 months again, so decided myself that maybe I needed another boost, been taking them for nearly two weeks and I can already see and feel a positive difference.
Service Rating: Recommend
Product: Helps with no sunlight at work
Service Rating: Perfect
Product: Under Consultants instructions
Service Rating: Good prices lots of selection easy to order
Product: Work well and easy to swallow
Service Rating: Fast delivery, great quality.
Product: Great quality, will buy from again.
Service Rating: I have to take vitamin D supplements for medical reasons, so it is important that I purchase a quality product. I have ordered two lots of D3 from them without any problems. I love the pouches that they are packaged in because they fir through the letterbox.
Product: I have to take vitamin D3 because my GP discovered that my pains were due to me being vitamin D deficient.
Ease of order excellent, delivery excellent but packaging of pills too big otherwise a 5 star
Service Rating: Great prices and quick delivery
Product: Best price around. Taking it due to feeling lethargic and thought it might help.
Service Rating: prompt and well packaged
Product: seems to be helping - two weeks in
Service Rating: Fast efficient service. Well packaged.
Product: Easy to swallow seems to be doing its job
First class service
Great product, great service
Service Rating: Quality products at very reasonable prices. Prompt delivery.
Product: Good quality, taken on medical advice
Always buy my vitamin supplements from Just Vitamins - excellent, prompt service.
Service Rating: Quick efficient service. I like the packaging too, it fits through the letterbox. The Acidopilus + work better than anything I've tried. I use them all the time now.
Product: I have much more energy than 3 months ago. I realised I was not getting enough time outdoors in the sun and since this was unlikely to change, decided on taking High Strength Vit D.
Service Rating: Very quick service
Product: Works well, feel much better
Great so far and a quick service.
Service Rating: Items well priced. A quick delivery.
Product: Items well priced and a quick delivery
Excellent service fast delivery, arrived the very next day
Service Rating: Speedy service would recommend
Product: Does what it says thank you
Service Rating: Excellent product & fast services! As always!⭐️⭐️⭐️⭐️⭐️
Product: I’m taking Vitamin b as I have a deficiency
Good products ,wish I could say the same about your delivery scam.
I received email with £5 discount offer,it worked I put another order in with you guys.Only I didn't get a £5 discount because I hadn't realised you set the postage as express by default therefore charging for postage instead of the assumed free delivery,nice one !! Very sneaky !!
On principal I will shop elsewhere thanks.
JC Dickinson
Feedback Response: Thanks for the positive comment about our supplements. As clearly stated in all of our offers, any discount applies to the value of your goods, excluding delivery charges. We do this because we do offer a variety of delivery options, some of which are chargeable (because they cost us a lot to supply these services) and some free (because they cost us less). Some customers are not in such a hurry for their goods, so the free-delivery option suits, but for those customers that require their goods more urgently, we do offer some paid-for delivery options. Our delivery options (and any charges) are clearly described on our Delivery Information page, then laid out very clearly on the Shopping Basket page when you review your order and again through the checkout process (where they can be adjusted if required). Just Vitamins offers Free Delivery on all UK orders - however small the order - which makes it fairly unique amongst our competitors. Thank you for shopping with us.
Service Rating: Great service and high quality !
Product: I´m pleased! High quality goods!
Service Rating: Great prices, Great speedy service.
Product: Perfect high dose in a convenient pill. I have MS and Vitamin D is so important to us that are afflicted by the disease.
Really fast delivery and the vitamins were exactly as ordered. This is the service I expect from all suppliers. Thank you.
Service Rating: Absolutely delighted with purchase and very speedy delivery. 10/10.
Product: Very satisfied with the Vit D tablets - I have a Vit D deficiency and my GP recommended taking a supplement. I am finding these vitamins are helping a great deal.
Delivered when they said it would be.
Service Rating: Easy purchase and fast delivery
Product: Love the high strength levels of these tablets
Service Rating: Use just vitamins frequently, never had a problem, always prompt service and quality goods
Product: Taken D3 for several years to help with bone strengthening
Service Rating: Easy to order fast post couldn't be better
Product: Easy to use resealable packet I use them because I have low vitamin D and these ones really help
Service Rating: Excellent all round trusted retailer 5star
Product: My brain is now working, I’m allergic to vit d in capsule form I think it’s the casing.
But I have had no problem with dry vit d xxxx
Excellent products at the right price and with brilliant and quick process to get the orders to you via next post, usually the next day.
excellent, easy to order, quick delivery, and not by royal mail who are a problem as they won't leave packages with neighbours.
Service Rating: Came really quick and have seen improvement in my son already I struggled to find these as he was allergic to most versions but because these are natural ingredients he can have them
Product: Son needs them as has lots of allergies everything you get vit d from he is allergic to
Got what I ordered, in time & with no problems.
Service Rating: Good prices and speedy delivery -no problems. Will certainly use them in future.
Product: I was recommended by a doctor to take this vitamin as I have hypothyroidism. The tablets are easy to swallow and reasonably priced. No nonsense packaging.
Service Rating: Quick delivery good service
Product: Very quick delivery and product just as expected
Easy to use website. Delivered as stated. Competitive prices