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Super Strength Vitamin D3 Tablets - 4000iu

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

428 reviews9610020
Buy Super 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
Super 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 = 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 9.6 / 10 - 428 customers have independently reviewed and recommend Super Strength Vitamin D3 from 428 reviews (showing latest 50 reviews)
Review Date
Review Details
Service rating: This company are very efficient and have a range of products at reasonable prices. Delivery service is great.
Product: My wife and I take this Vit D supplement and have both benefitted.
Would recommend
Service rating: Good prompt service. Unable le to comment on efficacy of supplement yet at this early stage,but so far so good.
Product: I have been taking the tablets for about 6 weeks. I feel fine. Hoping they will boost my immune system and help strengthen my bones.
Service rating: Speedy efficient delivery, great price
Product: Seems to be a good quality product
Quick delivery
Great service
Good value for money with on time delivery
Service rating: Excellent, fast, safe and secure delivery. No problems..
Product: Do what they say on the pack. Great help during dark days.
Service rating: Arrived quickly
Product: Arrived quickly. Great product
Service rating: Very competitive price, speedy delivery very satisfied with purchase
Product: Seen the advice about this vitamin so decided to start taking it
service always good
Service rating: Very fast turnaround time with order.
Product: Need to take additional Vit D in winter months as little sunshine in UK.
Service rating: Excellent service as the tablets arrived really quickly despite the time of year and all the problems with the post due to covid. I wouldn't go anywhere else for my vitamins.
Product: The tablets are easy to take and I'm taking them to built up my immune systems to protect me from covid 19
Service rating: i have been purchasing goods from this company now for a long time and always been delighted with the service.
Product: I am very satisfied with the quality
Service rating: Good service
Product: Itchy skin tablets have helped the problems
Service rating: I purchased vitamin D,because they have been advised by the government as a supplement that could be beneficial against the COVID .Also they are always good as we get Vitamin D from the sun ,which isn’t that much from UK Sun.So I think we should all think about a vitamin D boost.
Product: Hopefully doing the job.Also like the resealable packet.
Service rating: Excellent service and very speedy delivery from Just Vitamins.
Product: I have been taking Just Vitamins for some time now, they’re excellent vitamins at a reasonable price. I was so happy with the way I felt taking them that I introduced my daughter to them, now my granddaughter takes them to. That’s the trust we have in these vitamins.
Service rating: Easy to order, free delivery and quick service.
Product: Hope to boost our immunity against Covid19
Quick efficient delivery.
Excellent service
Service rating: Good service
Fast leverans and good price
Product: Good to complet lack sun light
Service rating: liked the eco package good to see not plastic bottle
Product: good quality advised by doctor to take after several broken bones
Service rating: Packaged really well, delivered quickly. Very good service.
Product: Too soon to tell if this helping me.
Service rating: great service , sensible prices
Product: All as expected and good value
Service rating: Quick speedy response and delivery even though I live in France
Product: Helps massively with menopausal symptoms like hot flushes but especially depression that I personally have noticed
Love the packaging in sealed bags. Good quality and competitively priced. Great variety of vitamins. Prompt delivery.
Service rating: Good product. Delivered promptly.
Can't ask for more.
But then I got more !
out of the blue I received a discount voucher.
It's great. I no longer have to trawl the net looking for nutrition suppliments. I can get them all in one place.
Thank you
Product: It's hard to tell the effects of suppliments.
Having said that it's the time of year for colds and snuffles and I have had none since I paid more attention to nutrition.
I did so because of covid as I am in the vulnerable group.
I must therefore assume they are working.
I started with good doses of vit d3 and am in process of ordering a multivit for over 50s.
a good idea to provide a specific.
I looked at content and it lists everything I have been advised to take. Now confident in your product and service I will top that up with the vit c and zinc boost. Great work
I am, and will stay a repeat customer
Good service
Quick service , good product . Thoughtful packaging
Arrived quickly. As described
Service rating: Arrived on time, happy overall
Product: All good, arrived on time too.
All good.will buy again
Service rating: Still have not received my order over a month later . Have queried with the company and no response . Seems like a con job don't waste your money like me.
Product: How can I know
Service rating: I get my ordered goods in a timely fashion they are well packaged and in good condition at a reasonable price
Product: I have started taking high strength vitamin D in an effort to improve immune system response to Covid 19.
Service rating: It's a really good company, great price and fast delivery.
Product: Good price, fast free delivery.
Service rating: The service and quality of the product is fantastic, always fast delivery and I am very impressed by their compostable packaging
Product: Great quality product easy to swallow
Service rating: I would happily buy from this company again. The tablets are supplied in a strong envelope type of packaging which fits through the letter box. And the tablets were sent very promptly.
Product: They are quite small tablets, and easy to swallow. I am taking them as it seems like a good idea through the dark winter days when there is no, or very little sunshine.
Service rating: Returning long-standing customer in need of vitamin supplement following a vitamin D deficiency- found the site and packaging and prompt delivery just as reliable as always!
Product: Consultant advice following hip replacement and Vitamin D deficiency
Bought as health supplement
Service rating: I've been buying from Just Vitamins for several years, always good service, and I like their new recyclable packs
Product: I've got MS and have taken these high strength Vitamin D tablets for many years after reading that it may be helpful.
Service rating: Good service, nice packaging.

Would have preferred 1 package of 120 tablets than 2 of 60 to save on packaging.
Product: Seems good so far. I take it yearly in winter to boost my levels
Service rating: Great price and fast delivery
Product: I thought I’d try this as the days are drawing in and I spend all day in the office with ver little access today light..
Service rating: Would definitely recommend just vitamins . Arrived well packed and on time. Will be ordering again from them doon
Product: Bought these vitamins as was recommended by a nurse to take vitamin as I hav muscle problems
Service rating: What a brilliant service - quick delivery and packaged extremely well. I am sure that the vitamins will be equally brilliant. Will definitely order from Just Vitamins again.
Product: I am sure that they will be excellent products although only started taking them for a week.
Service rating: good quick service , no problems .
Product: They do the job as required
Service rating: First time ordering with Just Vitamins, my order arrived very quickly & in perfect condition. I love their resealable pouches, so much better for the environment than often only half full large plastic tubs from other shops. The prices reflect the saving too. I will be buying from you from now on. Thank You!
Product: Great quality , as far as I can tell
Service rating: Very quick delivery. Excellent service, very happy customer Thank You
Product: Taking these for joint pain and they work . What more can you want . Thank You
Love that the packaging is 100% biodegradable!
Arrived in good time.