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APRIL SAVINGS - Save 10% On Everything - Discount Code: JVCD21 Min Order £20, Ends 23:59 23rd April

Super Strength Vitamin D3 Tablets - 4000iu

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

546 reviews9610020
Only 11.6p per tablet
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Only 9.5p per tablet
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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
  • Description
  • Product Information
  • Feefo Reviews Reviews

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 - 546 customers have independently reviewed and recommend Super Strength Vitamin D3 from 546 reviews (showing latest 50 reviews)
Review Date
Review Details
Service rating: Excellent service
Product: Helped with arthritis and great nail growth
Cannot fault them on choice, price, quality and delivery time
Service rating: Excellent as one expects of this product and service. Thank you
Product: Essential for health especially building some resistance to the likes of Covid 19 as advised by medical profession.
Excellent service. Vitamins arrived within 2/3 of ordering.
Service rating: Brilliant idea, love the packaging, saves on space
Service rating: I buy from JUSTVITAMINS for over 15 years and l am very happy with service, presentation, quality and price.....even with Brexit i continue buying from them.
Product: vitamin D3 is very important for your good heath, i always buy from Justvitamins
Service rating: Their pricing is slightly better than the high street. Their paper pkg is 100% fantastic. Quickly dispatched.
Product: Another vastly important vitamin as I rarely leave the flat.
Easy website, easy purchasing, great choice and speedy delivery.
Service rating: Was quick and good vitamins I like it I will buy more
Product: D always needed and easy to swallow thank you : )
Service rating: Ordering is easy and delivery is fast. A very efficient service.
Product: Multiple benefits. I usually only take it from October to April but during the pandemic I have not had a break from it.
Service rating: Good service, quick turnaround.
Product: This is the second time we have ordered this item.
My husband and I started to take Vitamin D3 after a doctor’s recommendation for protection against COVID.
We were surprised that the second batch of tablets was a different size to the first lot, but the packaging is identical.
Good website with some information on the vitamins but could do with more, to save me having to Google search the benedits of each supplement.

Nicely packaged, great communications and they arrived the next day..
Fast delivery,best supliments i ever had so far..professional team!
Just Vitamins gives very good service. Rarely are items out of stock. Packaging excellent.
Prices competitive. Definitely recommend.
Service rating: fast and accurate
Product: availability good, varied strengths
Service rating: Very pleased at the prompt delivery of my order ,. Very easy process to place the said order .
Product: I’m taking the high strength vitamin D tablets as a supplement. Due to covid & being in the house for long periods , I feel the lack of vitamin D needs boosting as this is a very important vitamin for my wellbeing & I will be ordering from you again when I need to . Thank you !!
Service rating: Great service. Everything you need with fast delivery.
Product: I am taking this supplement to help keep my immune system working well. Feeling great so far.
Service rating: Excellent service, package arrived earlier than expected, well packaged and as ordered. Very happy to continue using and recommend.
Product: High dosage recommended to help my MS, Seems to keep my brain functioning better and helps avoid SAD during Winter. Best ask GP/Pharmacist advice to make sure its suitable.
Service rating: Website very easy to find what you are looking for also good information about all the supplements. Good value for money.
Product: I suffer from low vitamin D levels so recommend to take a daily supplement by my doctor. I have found that since taking it my mood through the winter months has improved I was diagnosed with SAD years ago & have used lamps but I have found taking the vitamin D daily really does help.
Just Vitamins seem to tick all the boxes for me. Great quality & range of products, competitively priced and free delivery. What more could you ask for.
Great product and service and most importantly local
Service rating: very good.
Product: very good..................
Fast service
Service rating: Great service, delivered on time
Product: Great supplement, my bit D is seriously depleted so need to take a supplement untill we get some sunshine. 🌞
Service rating: Excellent service
Product: They are excellent value for money
Service rating: as described, delivered quickly
Product: as described. delivered quickly
Service rating: Always efficient. Last time a packet of vitamins was lost in post. It was reposted next day on first class mail.
Product: short of vitamin D and at recommendation of the doctor
Bought online without any problems. Arrived when expected,safety and securely.
Service rating: Service is excellent as always. This is my second purchase and I'll continue to use JV as their products are excellent and competitively priced.
Product: Very good product. Will buy again
Service rating: Quick, easy and received exactly what expected. Will be using in future for all our vitamin needs
Product: Quick, easy and for exactly what we wanted
excellent service
Speedy delivery. Eco friendly packaging. High dose vitamins. What's not to like.
Service rating: Very prompt delivery, and good, easy to use packaging. Have been a customer for several years now and cannot fault the company in any way.
Product: Used to only take Vitamin D during winter due to lack of sunshine, but read at the beginning of the pandemic that Vitamin D would help so my husband and I have been taking it for the last twelve months. We are in our late 70's so any help is welcome!!
Service rating: No hassle ordering and very quick delivery plus competitive prices.
Product: Taking Vitamin D to support low immune system and lack of sunshine.
Service rating: Fantastic delivery service, didnt wait long for tsbkets to arrive , safely packaged.
Product: Have taken for a while. Help my immune system
Service rating: Because everything went very quick and easy which is good for someone who isn't ofay with computers
Product: Excellent yet again brilliant all round and easy tablets to take
Good value, prompt delivery and recyclable packaging, would use again
each time i buy i am a happy customer - trusted quality, delivery, and service. Really appreicate that the packaging is compostable too.
Excellent Service
Always good value and free delivery.
Excellent service as usual
Service rating: Smooth ordering and quick delivery
Product: lack of exposure to sun light
Super service as always
Service rating: Not sure if in feeling any different after a month. But cause if the variety I'm happy to get more of what I'm lacking to help me feel better.
Product: Only a month in so still seeing if I feel any different
Speedy service, excellent value, well-packaged. Very positive buying experience.
Service rating: Always prompt despatch and delivery
Product: We have used these supplements for several years with the knowledge they're supporting our health over winter. They are usually much smaller and easy to swallow, latest pack however are quite chunky and not pleasant to take.
Service rating: The products are well priced and I have found them beneficial. They are simply packaged and arrived very quickly after ordering. Yes, I would recommend them.
Product: Was expecting them to be a gel capsule, but even though they are a tablet they are very easy to swallow.
Service rating: Good quality, good prices, prompt delivery
Product: Good quality at fair price
Service rating: Simple and efficient systems, prompt service and good quality products.
Product: It does the job and comes in recyclable packaging
Service rating: i ordered vitamins for the 3rd time as the service is excellent, I was kept informed of my order tracking and the product arrived quickly. I love the biodegradable packaging which goes in the composting bin.
Product: High strength vitamin D in easy to take capsules.

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