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FLASH SALE - Save 15% On All Vitamin D - Offer Ends 23:59 21st Oct

Super Strength Vitamin D3 Tablets - 4000iu

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

346 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 - 346 customers have independently reviewed and recommend Super Strength Vitamin D3 from 346 reviews (showing latest 50 reviews)
Review Date
Review Details
Service rating: Does what it say on the tin. Very speedy delivery.
Product: Many thanks .Speedy delivery
Brilliant service and packaging. I will order from them again.
Service rating: Great pricing, great service ...
Product: All in one place, great supplement.
Service rating: Rapide et conforme à mes attentes.
Product: C'est un trés bon produit
Service rating: Very good service. Packaging excellent - very environmentally aware.
Product: Very elderly, lacking energy due to lack of sunshine - live in Scotland. Starting to feel better.
Great service and great prices and great products
Service rating: Ordered from the website which was easy to navigate. Very reasonable price and the delivery was really quick.
Product: Unsure of effectiveness so far as I've only been taking these vits for a few weeks. Small, easy to swallow and can be taken without food. Hopefully they give my immune system the boost it needs.
Service rating: I have been a customer of Just vitamins for a number of years. They are reasonably priced, the service is excellent and I wouldn't buy my vitamins anywhere else.
Product: I feel that by having vitamins D make me feel better as I take quite a number of other tablets
Prompt service. Value for money. What's not to love! Brilliant just brilliant..
Service rating: Excellent service and fast delivery - thank you!
Product: Helps to top of my Vit. D intake when enclosed all day!
Service rating: Very pleased as always with my vitamins order. Excellent service. Value for money. Would definitely recommend.
Product: Value for money. High strength which is good for my husband and I through the winter months.
Service rating: Brilliant service - fast, professional and trustworthy.I will definitely use again.
Product: Brilliant that t in a environmentally friendly pack and not plastic! ...I am taking it as a recommended supplement for my medical condition .
Super quick delivery thank you. Particularly like the packaging that fits through my letterbox.
quick delivery. Good product. Good packaging
Service rating: Great product excellent service
Product: Great product excellent service
Service rating: excellent Quality, service and Product, as always, love the new packaging
Product: Great Product, good quality
Service rating: Everything went smoothly
Product: They are good for the immune system
Very good service and easy to find information online.also good products.
Delivery excellent.
Service rating: Quick delivery. Good price for vitamin. Good quality turmeric.
Product: Purchased these before and very happy with them.
They were quick to arrive, well packed.
Service rating: Excellent service, price, quality and quick delivery.
Product: Been taking these for a couple of months now & noticed a difference in my energy and sleep
Service rating: Great. Quick, efficient. No problems.
Product: It’s great to be able to buy the strength of this in tablet format.
“Very happy with the quality and quick delivery”
Service rating: I had a problem with my order but efficiently sorted when I rang
Product: Reas
Service rating: Competitive prices, excellent delivery times and new, improved eco-friendly packaging.
Product: Taking it on Doctor's recommendation as we live in Scotland and there is not enough Vitamin D in the sunshine here
Service rating: Speedy delivery and good value for money
Product: Always take Vitamin D! These were good value
Service rating: I would certainly buy these again a very prompt efficient service with a good value product.
Product: I have been taking Vit D for years but recently a friend advised Vit D3 was better so this is the first time I have tried this.
Service rating: My order arrived much earlier than I’d expected it to.
Product: I want to build the ability to fight Covid19 if I should be unfortunate to get it. I’d need all the help I can get at the age of 74.
Service rating: Fast delivery. Great products. Overall great service.
Product: Seems to be working well. Helping to keep me healthy even in times of global illness.
Yes, would tecommend
all ok would use again
Quick response, delivery via letter box.
Service rating: Fast delivery and good price, will be ordering again
Product: Great price and seem to be giving me a little more energy. Bought primarily to ensure that we have sufficient levels of Vit D to guard against Covid and other things
Service rating: Easy to order, Quick delivery. A very good price too compared with other outlets. Will order again .
Product: Vitamin D3, recommended for my age, 63, Been taking Vitamin D for a while now but read that D3 was better so using that. Will probably only know if they are any good if I stop taking them but dont want to do that.
Service rating: Fast delivery, product as specified, well packed, it arrived safely.
The tablets are larger than I expected, but it makes them easy to pick up. They are not hard to swallow, which is a bonus. Happy to use them again.
Product: Vit D because I have MS and have been told to increase more than usual dosage so I am happy to have these high strength tablets. They are a bit large, but that makes picking them up easy and they are not hard to swallow which is good.
Service rating: Great delivery. Easy to use ordering. Good price
Product: Taking to maintain my good health. Also purchased for a family member who is sheilding and unable to get a natural source on Vit D.
Service rating: Product quickly despatched and strength of supplements was higher than majority of other suppliers
Product: Manageable sized tablets. No aftertaste. Vitamin d supplement recommended after 'dark' winter.
Service rating: Good service. Would buy from thema
Product: We are taking the supplement because we are both in our 70's and feel we need a little help.
Good price and delivered quickly.
Service rating: Great value high strength Vitamin D delivered quickly in a flat letterbox friendly recyclable package. I have an improved energy level and will be ordering some more from Just Vitamins.
Product: I was suffering from low energy and was recommended Vit D. After 3 weeks I am definitely feeling lively and can only attribute this to Vit D. I will be continuing to take this supplement.
Good value good quality
Service rating: Great service as always, fast delivery
Product: Great service, fast delivery
Very prompt service and good value for money
Fast and reliable
Service rating: Good website
Product: Nice nice nice nice nicee
All items ordered were in stock, and all items arrived together. Good selection of products, good quality, good packaging and service. Easy to use web site.
Service rating: Came quick and good product thanks
Product: Vitamin D dddddddddddddddddd
Service rating: Fast, free delivery - and a great price. Would definitely order again!
Product: Great for the body - this is the perfect dose.
Does the job

Dispatch Notice

Due to a relocation to new larger and bespoke premises, we will not be dispatching orders fully until Monday 14th September.
We apologise for any inconvenience caused.