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Vitamin D3 Tablets - 400iu

1 a day strength as recommended by Government guidelines | 6 months supply

Vitamin D3 400iu main product image
Vitamin D3 400iu tablet view
512 reviews9810020
  • In body favourable D3 form
  • Helps build strong bones and teeth
  • For healthy muscles & good immunity
  • 1 tablet provides 200% NRV
Only 2.7p per tablet
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Supplement Description

Vitamin D helps to build strong bones and healthy teeth. Commonly known as the sunshine vitamin, Vitamin D is synthesized in the skin following exposure to sunlight. 

Ideal for boosting Vitamin D levels during the winter months

Most healthy adults should be able to get enough Vitamin D from being outside in the sun, unfortunately in the UK in the winter there isn’t much opportunity to get a daily dose of sunshine! This strength tablet is the ideal daily dosage for healthy adults who wish to maintain optimal vitamin D levels and is suitable for children over the age of 5 years old and pregnant women.

Recommended by the Food Standards Agency

The Food Standards Agency recommends that if you are pregnant or breastfeeding you should take a 400iu/ 10µg supplement of Vitamin D each day.

Older people should also consider taking 400iu/10µg of Vitamin D each day. Others 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

If you aren't getting enough Vitamin D, you might be more at risk of some of the harmful effects of too much Vitamin A.

Provides 200% NRV in a small easy swallow tablet

Our 400iu Vitamin D tablet provides 10µg (200% Nutrient Reference Value) in a small easy to swallow tablet. The UK Department of Health recommends that anyone at risk of a Vitamin D deficiency take between 400iu to 800iu per day to maintain healthy Vitamin D levels throughout the year. Read more in the paper produced by the UK Department Of Health on Vitamin D deficiency here.

Premium & All Natural Vitamin D3 Form

We use the premium and all natural form of Vitamin D, Cholecalciferol (Vitamin D3) in this supplement. Also available as higher-strength Vitamin D3 1000iu tablet.

Product Information

Vitamin D3 400iu tablet view
Tablet Size
8mm Round
Cautions & Warnings
List of Ingredients
Recommended Intake
Legal Category


Customer Reviews for Vitamin D3 400iu

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 - 512 customers have independently reviewed and recommend Vitamin D3 from 512 reviews (showing latest 25 reviews)
Review Date
Review Details
Service rating: cannot remember
Product: I don't know about the rating of the Nature's Best 400iU tablets because I have no way of telling if they are efficatious but they were the cheapest I could find at the time when I bought them.
Service rating: Web search
Product: Good price, seemingly a good product but I’m no chemist. Simply packaged, environmentally aware
Service rating: Web search
Product: Price and strength
Service rating: Delivery has always been quick and reliable. Website is easy to use.
Product: It’s the right thing for me.
Service rating: The website was very easy to use. I could quickly fine what I was looking for and the price and delivery was very clear. The pills came quickly and are no trouble to swallow. I have bought them several times now
Product: Taking vitamin D at my age in the U.K. winter is recommended. These are exactly the right dosage and vegan as well
Service rating: Good product at a good price. Definitely recommended.
Product: We take vitamin D through the winter months and this is just the right dose according to NHS guidelines.
Service rating: Very good.
Product: Everything in order, and alright.
Service rating: I asked for a refund as the vitamins were inedible in my opinion and they were very reluctant to give it. Only after saying I would provide my honest review did they agree, however it never materialised.
Product: Happy with this supplement, would buy again.
Service rating: Good service and product
Product: Taken as a supplement to enhance my my vitamin intake
Rapid delivery
Service rating: The website is clear & easy to use, the products are top quality & after using this company for several years now, I've never been let down or disappointed.
Product: My eye problem has improved since starting using this product.
Service rating: The order was fulfilled promptly and the price compared well with others.
Product: Taking it because Vit D is supposed to be beneficial when sunshine is lacking, and to help guard against Covid.
Whether it works, in those respects, I've no idea
Service rating: Easy to order and arrived very fast.
Product: Liked the packaging. Posted through my letterbox easily.
Quick delivery and competitive price
My order was delivered quickly and packaged well.they were marked with detail how to take them.
Good straightforward transaction and good value.
Service rating: Fast efficient service.
Product: To counter sunshine deficiency during winter months. Seems to. be having a positive effect
Pompt delivety.
Service rating: All aspects of the service were excellent.
Product: Liked the size and shape of tablets, taking to increase vitamin D3 levels.
Service rating: Prompt delivery, well packed, fair price. This is a repeat order because I have been pleased with previous ones
Product: Vitamin D3, the sunshine vitamin to take during the winter months. This is the dose recommended by the NHS.
Service rating: Huge choice of vitamins. I have been buying their 400iu Vit D each winter for several years and The tablets arrive in a neat resealable paper bag saving plastic usage. The postage price iis reasonable too. and the service speedy and efficient. (One year I accidentally added double quantity to my basket but they contacted me before processing my order to check if I really wanted that quantity.!) I was very impressed.. I am happy to recommend Just Vitamins.
Product: We take 400iu Vitamin D daily each winter in accordance with NHS . The tablets are small enough to easily swallow (unlike some once a day pills!)
Service rating: Very good value, high quality product.
Product: High quality product. Vital source of sunshine for winter months.
Easy site to navigate and fast service plus good quality
Excellent service
Service rating: Very satisfactory transaction, as always.
Product: Taking this on doctor's advice due to age.

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