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High Strength Vitamin D3 Tablets - 4000iu

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

(252 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 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. 
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 - 252 customers have independently reviewed and recommend High Strength Vitamin D3 from 252 reviews (showing latest 50 reviews)
Review Date
Review Details
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
Service rating: Brilliant
Product: Brilliant, absolutely love them
Service rating: They are fast, accurate & reliable. They provide a good service at a good price.
Product: It’s hard to come by the high dosage. I take it to counteract the lack of sunshine in winter and because as an older person, my levels are lower.
Service rating: Excellent product. Good service and price. Would highly recommend
Product: The product is perfect for when you are low in vitamin b
Excellent service quick delivery with good communication
Service rating: My order was fulfilled correctly. Delivery was quick (as promised) with neat and tidy, compact packaging. Products are excellent too. Thank you. I will order again
Product: To compensate for lack of sunshine in north of Scotland. Won't take during summer months.
Service rating: Always use Just Vitamins. I wouldn't go anywhere else. I completely trust them to provide me with the highest quality, and they always do. Quick delivery and always well packaged, and priced well
Product: Our GP told my husband that his body was low in certain vitamins so I just ordered them from Just Vitamins and he started taking them from the day they arrived. I think it's too soon to expect an improvement so he will just keep taking them every day
Service rating: Super quick delivery. Really good quality product with a long expiry date. I always use this company.
Product: I had numerous fractures due to rheumatoid arthritis. My rheumatologist suggested taking the vitamin d supplement over the winter and after 2 years of doing so I have been free of any problems. I'm so much more able to get about. I take the dose he recommended.
Service rating: Ačiū. Puikus produktas. Greitas pristatymas.
Product: Manau rekomenduoti pažįstamiems.
Service rating: All was good! The ordering, the dispatch, the delivery, Excellent! Would definitely
order again, and would recommend!!
Product: I think this supplement is good. The reason I am taking it, is because
The nurse at my GP surgery advised me to take it as my Vitamin D is very low, she wanted me to take 20,000 Units, but have been unable
to find anywhere that does that strength!
Service rating: Great
Product: Helps me in the winter. Price is good.
Fast response and delivery. The supplements are of the strength I need and I like the packaging too. Thank you.
Good value for money
Service rating: Great service, always buy from them.
Product: Good supplement, easy to take.
Service rating: Ordered very efficient delivery service and great value for money. Highly recommend
Product: Recommended by GP due to most English people suffering from deficient VIT D levels due to the weather.
Quick response and delivery. Good price
Service rating: Yes. Very quick service. Already recommended you to a friend. Would definitely buy again.
Product: Needed high strength vitamin D and had trouble finding thanks for that. Turmeric seems to be working on my knee joint,tried rose hip capsules & lots of others.
Prompt delivery at competitive price
Service rating: Fast delivery!! Easy to order. Good price.
Product: Vitamin D3 is essential for health.
Best service - fast - great web experience
My tablets arrived swiftly and well packaged. I cannot confirm the effectiveness of these tablets as these are early days. My only criticism is the price, which I consider is far too high. Looking for equivalents at a more reasonable price.
Prompt delivery and well packaged. Have used Just Vitamins previously and found the products to be good quality.
Service rating: regre
Product: bhdfdghfdfgdfhgdfhdhdhdhdf
I cd not get my password accepted, rangvand was sssured Customer Services wd raring me backbthey never did. Someone should lose their job.
Feedback Response: We're really sorry to hear you clearly didn't receive the customer services you would normally expect from Just Vitamins. We endeavour to respond and help all customers with their queries. Unfortunately on this occasion we failed and will try to offer a better service in the future. Apologies again.