- Provides Vitamin D3 400iu, as recommended by The Department of Health
- For the maintenance of normal bones, teeth, muscle function, and immunity
- Easy-to-swallow, one-a-day, vegetarian-friendly formula
- For more information, please read our Vitamin D FAQ
Product ID: 505
£4.95
- Provides Vitamin D3 400iu, as recommended by The Department of Health
- For the maintenance of normal bones, teeth, muscle function, and immunity
- Easy-to-swallow, one-a-day, vegetarian-friendly formula
- For more information, please read our Vitamin D FAQ
- Product Information
Our convenient, one-a-day Vitamin D3 400iu tablets provide The Department of Health-recommended amount of Vitamin D all UK adults should consider taking throughout the winter months.
This level is an excellent choice if you want to top-up your vitamin D intake or combine it with one of our comprehensive multivitamins, most of which already supply 400iu vitamin D3. If you get very little sun exposure, we recommend our higher strength Vitamin D3 1000iu product.
Our pure-grade Vitamin D3 400iu delivers the preferred form of vitamin D (cholecalciferol or vitamin D3), which is naturally synthesised in the body when sunlight directly hits the skin. The body absorbs vitamin D3 much better than the D2 form (ergocalciferol) made from plants.
We've chosen to provide this strength of vitamin D3 in tablets, not capsules, since this product is recommended as a top-up level, best taken alongside a multi with magnesium, zinc and vitamin K, which all increase vitamin D absorption.
We manufacture and package our Vitamin D3 400iu in UK factories working to Good Manufacturing Practice (GMP) to ensure our quality standards are always met.
Since Vitamin D3 400iu is made from cholecalciferol, it's suitable for vegetarians not vegans. However, if you're looking for a plant-based alternative, you can try our Vegan Vitamin D 1000iu.
Still unsure of which vitamin D3 product to choose? Don't worry. We have a team of friendly Nutrition Advisors on hand to help you pick from our extensive Vitamin D3 offerings. Simply click the 'Nutrition Advice' button located at the bottom right-hand of our website to start a live chat.
Learn more about the health implications of low vitamin D levels here.
What does vitamin D3 contribute to?
Vitamin D3 contributes to the normal absorption and utilisation of calcium/phosphorus and the maintenance of normal bones, teeth, and muscle function. It also contributes to normal cell division, the normal function of the immune system and healthy inflammatory responses.
- Daily Intake
- Take 1 tablet daily with a meal. Do not exceed recommended daily dose.
Food supplements should not replace a balanced diet and healthy lifestyle.
For more information, please read our Vitamin D FAQ. - Formula
- Typically per tablet:Vitamin D3 (400iu) 10µg
- Ingredients
- Bulking Agents (DiCalcium Phosphate & Cellulose), Vitamin D3 (Cholecalciferol), Anti-caking Agents (Silicon Dioxide, Stearic Acid & Magnesium Stearate).
* Vitamin D3 (cholecalciferol), the form of vitamin D most used in published studies. Sourced from the lanolin content of wool, the material undergoes further processing to ensure an extremely pure and crystalline pre-vitamin D3 material. Through exposure to uv light (the same process our bodies use to manufacture vitamin D from sunlight), a highly stable form of vitamin D3 is manufactured.
Our Vegan Vitamin D3 supplement contains cholecalciferol sourced from plant lichen. - Suitable For
- This product is suitable for all adults.
This product is suitable for vegetarians.
This product is suitable during pregnancy and breastfeeding.
This product is not suitable for vegans. - Cautions/Allergies
- This product is free from wheat, yeast, dairy, soya, and nuts and shellfish. This product is free from gluten containing ingredients.
- Frequently Asked Questions (7)
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Q - "Can I Crush The Vitamin D3 400Iu Tablet?"A - Yes, this tablet can be crushed and taken with a meal.Q - "Why Would I Chose Vitamin D3 400Iu?"A - This is a great product to take during the summer months as a maintenance dose. It is also a good choice to take alongside a multivitamin.Q - "Do I Need To Take Vitamin D3 400Iu With Anything Else To Help With Absorption?"A - We would recommend taking Vitamin D3 400iu with a meal to aid the absorption.Q - "Where Can I Find Out More About NRVs (Nutrient Reference Values)?"A - Read our article Everything you need to know about NRVs.
Reviews
"Very helpful "
By John Latham
, 27 Jun 2025
Verified Purchase
Use this product mostly in winter keeps Yr mood more happier and gd for you
Recommend to a friend: Yes
Value for money:
How much has this product helped you?
"An easy to use product. "
By Sarah Russell
, 26 Jun 2025
Verified Purchase
Vitamin without being in the sun.
Recommend to a friend: Yes
Value for money:
How much has this product helped you?
"Seems o be ok"
By Anonymous
, 18 Jun 2025
Verified Purchase
Doctor recommendation
Recommend to a friend: Yes
Value for money:
How much has this product helped you?
"Mum always buys these"
By Anonymous
, 20 Mar 2025
Verified Purchase
These are great, mum always gets these as advised to take vit d due her severe ost***orosis which she takes these along prescribed meds, would recommend
Recommend to a friend: Yes
Thank you for taking the time to leave a review.
If your mum is not already doing so, we would suggest that she keeps her doctor informed of any supplements that she is taking.
If your mum is not already doing so, we would suggest that she keeps her doctor informed of any supplements that she is taking.
Nature's Best Nutrition Advice
Value for money:
How much has this product helped you?
"Necessary supplement"
By Anonymous
, 15 Mar 2025
Verified Purchase
I take these to offset the lack of vit D in the winter in uk, combined with my age.
Recommend to a friend: Yes
Value for money:
How much has this product helped you?
