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High Strength Vitamin D3 Tablets - 4000iu

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

(109 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 - 109 customers have independently reviewed and recommend High Strength Vitamin D3 from 109 reviews (showing latest 50 reviews)
Review Date
Review Details
Fast service and great products as always. Will definitely return.
Service Rating: As usual quick delivery, good product information reasonably priced
Product: quality at good price. will continue to purchase
Very Fast delivery and love the packs instead of bottles
Service Rating: Usual excellent service and speedy dispatch and delivery. Great value for money and simple to order.
Product: These really help with my psoriasis
Service Rating: Both delivery and value for money is excellent as always.
Product: Excellent product and value for money.
Good company, good prices, quick delivery, what else is there?
Service Rating: many thanks quick deliver and good service
Product: many thanks for a good service
Packed very well, fast delivery, and good value for money. Would recommend them.
Service Rating: Quick service and delivered on time
Product: Wife wife takes them she swear by them
Great service, fast efficient and well worth what I paid. I liked the resealable pouches rather than bottles.Thank you for a great service
Service Rating: Efficient and accurate
Product: They seem fine though a bit 'chunky'
Service Rating: Quick service and competitive pricing. The tablets aren't the easiest to swallow
Product: Seem to work but hard to swallow
Service Rating: Quickly delivered in very handy pouches which is a great idea. Small chunky pills easy to swallow. I couldn't source this strength locally so had to try the Internet, Extremely good prices. Great company...
Highly recommended..☆☆☆☆☆☆
Product: Easy to swallow
Easy to purchase
Easy to get
Easy to receive
Easy to pay
Easy to reorder any time of day..
Service Rating: Prompt delivery, reasonably priced and letter box friendly packaging for most items and the web site is straight forward. What's not to like ?
Product: I think that in our climate it's probably prudent to keep vitamins D3 levels topped up. These tablets are high strength and as far as I can see do the job.
Service Rating: Did all they promised.Correct order ,on time, good product.
Product: Good product. does what it says on the cover.
I was so impressed with the speed and delivery of my order. I am finding the vitamins I ordered to be of a very high standard and I will be buying them again when this order runs out
Quality vitamins, efficient delivery
Service Rating: Quick and easy thank you
Product: Working well for keeping away winter blues
Service Rating: vitamins arrived fast would recommend smooth easy purchase I feel better already
Product: I have been diagnosed with vitamin D deficiency so I need a stronger dose than on the supermarket shelf only been taking them for 2 weeks and I feel much better more energy and less aches
Great delivery, arrived super fast and before they had said it would be delivered. Great easy blister packs and vitamins are great. Will definitely use again when I run out!
Service Rating: I live in Portugal, always reliable and the products of high quality. Only once were the products lost and a replacement sent immediately.
Product: I have MS and need to take extra Vitamin D ,so easy with Just Vitamins
Everything just went perfectly to plan. I even received more than ordered - possibly because of stock - but it was wonderful to know they cared enough to get them to me and not delay.
Service Rating: The packaging is awful, packed in a resealable bag, won't be back for more whatever the price !
Product: Terrible, resealable bag, bad packaging wont buy again whatever the price !
Service Rating: Very Fast on delivery, good price.
Product: My Wife says supplement is great help
Service Rating: Delivery arrived sooner than the estimated time and communication updates were very good.
Packaging was in the form of sachets - not what I expected, and not as easy to access as from a bottle but acceptable and since the product was such good value it was not really an issue.
Product: Low Vit D Levels for a long time. This is good value for money and I bought it based on the other reviews. It is larger than most supplements, perhaps due to the high dosage contents, but not difficult to swallow and neither bitter or unpleasant in taste. Too early to say whether it will be effective yet.
Service Rating: Really good service received my order promptly.
Product: The supplement is high strength but the pills are so tiny and so easy to swallow. I ordered the high strength as my vit D levels were really low as a result of the contraceptive injection.
Service Rating: Great service, will be using again
Product: I suffer from PMLE and these vitamins have helped my body cope a lot better
When I order products, they always arrive very quickly and are of good quality.
Excellent product, quick service and great range. No fuss buying. Love it.
Brilliant service and good products.
wish i had the info re contents of vitamins as some have lactose etc in!
Service Rating: recommended very good product speedy delivery.
Product: very good product good value for money
Service Rating: Fabuous product and quick delivery
Product: Vitamin D is great and easy to buy online Iike this.
commande reçue très rapidement.
Service Rating: 1st class product, excellent service.
Product: I have never had a 'real' cold since I started taking these Vit D tablets. Thank you.
Orders always arrive promptly.
Excellent and reliable
Service Rating: a quick response
Product: Only just stared taking it
Excellent service .
Service Rating: Quick. Easy. Neat packaging. Will use again.
Product: I like the opportunity to buy high strength
Good service will be continuing to purchase as needed
Service Rating: Use this company often and they are aways very helpful, professional and deliver products quickly.
Product: I take Vitamin D3 for medical reasons. The tablets themselves, whilst having a small circumference, are fairly deep so they are not that easy to get down
Fast,clean and simple
Service Rating: Excellent item, easy to swallow, no nasty taste left (as I have had with previous vitamin pills) would highly recommend.
Product: Excellent product, good value, easy to swallow.
Delivery was very quick. I like the no frill packages of each vitamin.
Service Rating: Excellent website - Good quality vitamins at reasonable prices, with spedy delivery.

Highly recommended
Product: Have only just started taking them but if the result is a reduction in the amount of coughs and colds, then I will be extremely pleased.
Arrived very quickly and I am very pleased with the vitamins. I will be ordering from Just Vitamins again
Great service fast delivery