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High Strength Vitamin D3 Tablets - 4000iu

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

276 reviews9610020
Buy High Strength Vitamin D3 Tablets - 4000iu
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  • Description
  • Product Information
  • Feefo Reviews Reviews

Key features

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

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 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. 
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 9.6 / 10 - 276 customers have independently reviewed and recommend High Strength Vitamin D3 from 276 reviews (showing latest 50 reviews)
Review Date
Review Details
Efficient as always
As stated, excellent from start to finish. Will be ordering again as needed.
Service rating: The service is excellent. Always prompt delivery
Product: I take this supplement as I have MS & find it to be beneficial
Service rating: Brilliant service. Came within 2 days. Tablets make me feel so much better than I did x
Product: Vit d deficiency
All good. Happy with service and goods.
Service rating: Livraison rapide et produit ok
Product: Bon complément pour la santé.
Service rating: Great value and reliable service
Product: Cheapest but high strength
Good service. I will be ordering again.
Good quality, cheaper than competitors, prompt and free delivery. Would definitely recommend.
Service rating: Top quality products, great prices, speedy delivery and recyclable packing
Product: Easy to swallow tablet form and in doses not found elsewhere.
Service rating: Very fast service and excellent product.
Product: Very easy to take and relieved aching joints and combats fatigue.
Service rating: Very speedy service
Product: Needed ito support bone growth in my mouth to have some dental implants
It's a very good service keep up the good work.
Service rating: Service was speedy! Used to get supplements off the high street but the ones at Just Vitamins are almost 5 times the strength for the same or lower price! Feeling great so far and love the sea kelp to help my hair grow! :)
Product: My boyfriend gets a dark patch on his back when he doesn’t get sunlight so these really help! Thanks!
Simple to use website, products arrive quickly. I’m also very happy that they’ve change to compostable packaging!!
Service rating: All o.k. bar one item ordered wasn't sent, instead an item I hadn't ordered was sent. Had to mention to Customer Services who replied fast & sent missing item quickly as well as a postage paid jiffy envelope for returning wrong item. Very hood Customer service. Repeat Customer for years, & this has been only problem.
Product: Good price for high strength supplement.
Service rating: Easy to use service
Not sure abt product yet as too soon to tell
Product: Easy to swallow pill
Too soon to tell if this has made a difference
Service rating: Ottimo venditore. Ottimo prodotto. Ottimi prezzi. Ottimo sistema di confezionamento. Ottima Spedizione. Tempi di consegna per posta ordinaria accettabili visto che viene consegnato da Poste italiane.
Vivamente consigliato. Grazie
Product: E' la prima volta che li acquisto e devo verificare il risultato.
Just Great
Service rating: They always deliver,only once in 15 years has a delivery got lost

High quality products and a marvelous range
Product: Fantastic product and quality
Service rating: Bought before, reliable delivery, good value.
Product: Bought before, reliable delivery, good value.
Service was good, fast delivery and comms great.
They came on time.
Service rating: Prompt service, minimal packaging, though I would prefer it if the vitamins came in recyclable bags.
Product: Because I live in Scotland and the Doctor has recommended it
Delivery was fast and efficient, good service for sure, and the price excellent.
Service rating: I don't order a lot but the service and delivery time has always been great when I do, it's the reason why I return each time.
Product: I take it in the winter months only to keep my vitamin levels normal.
Very quick.good value
Service rating: My number one supplier of vitamins
Product: In Sweden you really need x-tra intake of vitamin D
Service rating: Excellent value for money and great delivery time
Product: .too early to know if they’re having any effect
Service rating: Fantastic service as always, great price and fast delivery, what more could you want.
Product: Great price, far cheaper than paying for a prescription
Service rating: Great 1st time with Just Vitamins. It was dispatched within 10 minutes of ordering and free delivery service. Would highly recommend.
Product: Very easy to swallow as not ad big as some. Told to take by consultant due to been diagnosed with MS
Service rating: Their operation is very simple, just send the items requested, no big deal.
Product: My wife and I are both 84 years old and most say we look in our 50s, maybe the Q10 etc we have had for years is partly the reason.
Service rating: good communication and fast delivery. will use again
Product: bought vitamin d tablets, not sure if im getting any benefits to early to tell
Service rating: Great packaging speedy delivery and great products at a great price
Product: Awesome great products
Very Happy
Service rating: Excellent service. Well packaged and presented goods. I feel a huge difference since taking turmeric and would recommend to others.
Product: Advised to take through the winter when little sunshine. Will take all year round.
Service rating: Have used just vitamins frequently for over a year now. Prompt service and reasonable prices.
Product: Vitamin D as lacking in this vitamin due to lack of sunshine in the UK. Since taking vitamin D I am not so tired and generally feel more healthy.
Service rating: Good prices and fast delivery
Product: Good product at a reasonable price
Service rating: The vitamin D I bought work far better than expect, The service was fast and the prices are good,,, going to use again
Product: Vit D for sun tan,, I have a Golden brown for the 1st time
Service is great.
Service rating: Would definitely buy again from this company.
Product: Taking time to work but pleased with feeling less tired.
Service rating: Excellent very pleased with my order
Product: The vitamins are superb !!
Service rating: Prompt delivery. Good quality product, I believe been taking the vitamin D for just a month.
Product: Feeling under par at the moment. I've been meaning to add vitamin D to my current supplements fingers crossed.
I may have a leaky gut so will inquire if you have relevant stuff?
Service rating: prompt delivery. Like the packaging that fits thru the letterbox. Good value
Product: Excellent product, good value
Service rating: Excellent product, packaging and labelling. quick postage.
Would highly recommend
Product: You get what you pay for, no frills, no nonsense just what you ordered.
Service rating: Fast, efficient service.
Product: Taking these supplements as have read we are short of bit D3 in this country. I assume they are helping me but not entirely sure what the benefits are as yet.
Service rating: Excellent prices and prompt delivery.
Product: After being diagnosed with VIT D deficiency needed a good high strength tablet. Not sure if they are working yet, but will persevere. Good price. Prompt delivery.
Service rating: Tarif et délai de livraison ok.
Product: Amélioration notable de mes douleurs dorsales.
Service rating: Quick and efficient service!
Product: I have found the products to be of high quality.
Service rating: My vitamin d tablets were delivered quickly and well packaged... what more could one ask for.
Product: It’s supposed to
Help MS x
Service rating: Excellent
Product: These help me through the hay fever season