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SALE EXTENDED! - EVERYTHING IS REDUCED! Sale Ends 23:59 28th Jan 2022

Super Strength Vitamin D3 Tablets - 4000iu

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

644 reviews9810020
Only 10.4p per tablet
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Only 8.6p 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 9.8 / 10 - 644 customers have independently reviewed and recommend Super Strength Vitamin D3 from 644 reviews (showing latest 25 reviews)
Review Date
Review Details
Product as described with speedy delivery. I’ve been using Just Vitamins for a few years now.
Service rating: Prompt service and delivery. Website easy to navigate.
Product: Taking as sheilding and missing the sunshine
I have recommended Just Vitamins to several friends as I find they to be very responsibly priced & very reliable I also like the fact that they are not sent in bottles so I do not have to be at home when they are delivered as they can be posted through the letter box.
Service rating: Speedy delivery.
Product: Speedy delivery. Good value for money.
Quick hassle free service with fast despatch and delivery.
I used the multi purchase to get best value for money. I recently tried a different brand of Saw Palmetto, however after using for a while, I seemed to get no benefit from them. Have gone back to the Just Vitamin ones and have immediately felt the effects. I will be sticking with these in future.
Service rating: Fast and efficient service.. product arrived in eco friendly envelope. Really like the fact that supplements are contained within a recyclable packet as opposed to plastic.
Product: Have taken Vit D for years, but only a very low dosage. Due to the current situation I decided to go for a much stronger vitamin D.
Service rating: Great, fast service, thanks. Vitamins are of a good size, not huge, so I can swallow them.
Product: A good strength of Vit D3 for Winter.
Super fast delivery!
Service always excellent Never disappoint prompt service
Service rating: Good service. Prompt and fast delivery.
Product: Its a good supplement and I take them for health reasons
Service rating: Very fast good product packaged well
Product: Easy to take essential winter vitamin
Service rating: I’ve used just vitamins for years now, they are good quality and great prices.
Product: Great quality price and with free delivery what more can you ask for.
Service rating: Great service prompt despatch and swift delivery
Product: Wanted a high strength without the tAblet being too big - these were just the job
Service rating: Very quick delivery. Good packaging.
Product: Easy to swallow. Taken on advice from doctor
Service rating: Great service purchases proved very effective and would shop again
Product: because they have proven very good
Service rating: Service is always 1st class always delivered on time
Product: Quality is always good never had any poor quality
Regularly buy from Just Vitamins and happy with products and prices. Not happy with these frequent requests to review!
Excellent does what it is ment to do. Received goods quickly.bhave used firm for many years.
Service rating: Quick dispatch and high quality products at good prices.
Product: Good price for the strength.
Fast delivery, minimal packaging, just a good honest no frills product. Will keep buying from them.
Service rating: Very satisfied and efficient
Product: Too early to tell yet. Taking it after bone scan
Service rating: Received vitality vitamins promptly. Thank you
Product: High strength vitamin D supplements i bought for potential protection from Covid 19
Service rating: Prompt delivery, safely packaged and as requested. Happily recommend and will use again.
Product: I was recommended Vit D3 after a blood test and the benefits are worthwhile. Also helps my husband fight SADo in Autumn/Winter.